scholarly journals APPLICATION OF THE DEVICE FOR RECEIVING AND TRANSFER OF SEEDS IN THE TECHNOLOGY FOR PREPARATION OF LOWERED SEEDS AND SUBSTANTIATION OF THE BASIC PARAMETERS

2020 ◽  
Vol 3 (5(74)) ◽  
pp. 11-17
Author(s):  
R.K. Djamolov
Keyword(s):  
Rotation Speed ◽  
Screw Conveyor ◽  
Optimal Size ◽  
Mathematical Planning ◽  
Basic Parameters ◽  
Planning Of Experiments

The article analyzes the development of technology for the preparation of pubescent sowing seeds, based on the effectiveness of the development of a device for receiving and transferring pubescent seeds and its application in technology. The results of determining the optimal sizeof the device for receiving and transmitting pubescent seeds by the method of mathematical planning of experiments are presented.As a result of determining the optimal size of the pubescent seed receiving and transmitting device (UPS) by the method of mathematical planning of experiments, the pitch of the screw conveyor is 165 mm, the rotation speed of the screw conveyor is 20 rpm, the guide-adjuster and the distance between the screws were 50 mm

scholarly journals A Study of the Potential Use of Red Mud to Obtain Compositions Based on Portland Cement

2020 ◽  
Author(s):  
Ekaterina Gerasimova ◽  
Elizaveta Gumirova
Keyword(s):  
Portland Cement ◽  
Red Mud ◽  
Waste Product ◽  
Cement Stone ◽  
Mathematical Planning ◽  
Alumina Production ◽  
Mineral Additive ◽  
Composition Properties ◽  
Planning Of Experiments ◽  
Potential Use

The paper deals with the problem of utilization of red mud which is a waste product from alumina production using the Bayer method. The principal possible use for the red mud of JSC “Bogoslovsky aluminum plant” (Sverdlovsk region) for the compositions based on Portland cement is shown. It was found that the mud introduction accelerates beginning of the cement paste setting and thickens the paste reducing its mobility. It is concluded that the introduction of red mud up to 30 % is justified in terms of strength indicators. The work is carried out using mathematical planning of experiments. Keywords: red mud, Portland cement, active mineral additive, composition, properties, bauxite, chemical composition, cement stone strength, mathematical planning of experiments

scholarly journals Modeling of compositions and predicting properties of modified mixtures for rough thin-layer coatings

2020 ◽  
Vol 7 (2) ◽  
Author(s):  
Dmitriy Chernykh ◽  
Mihail Pakin
Keyword(s):  
Thin Layer ◽  
Building Materials ◽  
Physical And Mechanical Properties ◽  
Graphical Form ◽  
Operational Parameters ◽  
Mathematical Planning ◽  
Statistical Research ◽  
Second Stage ◽  
Optimal Values ◽  
Planning Of Experiments

In recent years, the approach to experimental and statistical research and optimization of complex multicomponent systems has changed radically. In various fields of scientific and technical research, methods of mathematical planning of experiments are successfully used. Their wide application significantly increases the effectiveness of research, as well as proves their universality and suitability in most studies of building materials. As a result, the authors present a method of mathematical planning of the experiment, which is used to optimize the composition and properties of modified mixtures for rough thin-layer coatings. This method allows a fairly complete and comprehensive assessment of the effect of components on the properties of modified mixtures and to obtain a mathematical model of the process in graphical form, as well as to obtain a theoretical model for evaluating and predicting the physical, mechanical and operational properties of the materials under study. In this article, the first stage of research was used to select the percentage of binder, hydrate lime and additives, and also studied the influence of the variation factor of these components on the physical and mechanical properties of the mixture. At the second stage, changes in response functions were investigated. The results of a complete three-factor experiment allowed us to establish rational ranges of values of the studied components in order to obtain mixtures for rough concolay coatings with optimal values of physical, mechanical and operational parameters.

scholarly journals Mini crusher-shredder for farms

2021 ◽  
Vol 264 ◽  
pp. 04038
Author(s):  
Komil Astanakulov ◽  
Fakhriddin Karshiev ◽  
Shokir Gapparov ◽  
Dilshod Khudaynazarov ◽  
Shavkat Azizov
Keyword(s):  
Rotation Angle ◽  
High Reliability ◽  
Experimental Studies ◽  
Mathematical Planning ◽  
Quality Performance ◽  
Working Bodies ◽  
Planning Of Experiments ◽  
Good Visibility ◽  
Rotary Type

The purpose of the study is to substantiate the parameters of a mini crusher-shredder for processing coarse feed stalks in farms. The feasibility of using a mini crusher-shredder for processing coarse feed in the conditions of farms and farms with a small number of animals, which has a rotary-type shredder that combines the operations of grinding and crushing, is justified. The research uses the laws and rules of mathematical statistics, mathematical planning of experiments, and the methods given in existing regulatory documents. Experimental studies were carried out to study the influence of the rotor parameters of the mini crusher-shredder on its quality performance. A compact crusher-shredder has been developed, which has good visibility of the working bodies, high reliability, and quality of work due to zootechnical requirements. Experimental studies have established that when using a hammer of a flat-turned shape with a lower sharpening and a rotation angle of 60 or more, high-quality grinding of the stems is provided.

Installation for the investigation of screw working bodies with elastic surfaces and the results of their experimental tests

2021 ◽  
Vol 103 (3) ◽  
pp. 98-109
Author(s):  
Ivan Hevko ◽  
Oleh Liashuk ◽  
Oleg Tson ◽  
Taras Dovbush ◽  
Serhii Zalutskyi ◽  
...  
Keyword(s):  
Agricultural Production ◽  
Food Industry ◽  
Rotation Speed ◽  
Experimental Tests ◽  
Screw Conveyor ◽  
Theoretical Substantiation ◽  
Minimal Damage ◽  
Speed Selection ◽  
Working Bodies ◽  
Elastic Surfaces

Screw conveyors are widely used in various sectors of the economy determining specific requirements for them. One of such requirements is the possibility of safe movement of brittle elements and products with possible increased damage (injury) in pharmaceutical industry, electronics, food industry, as well as in agricultural production during the transportation of seed grain materials. The theoretical substantiation of the increase of efficiency of bulk cargoes transportation by screw conveyors is given in this paper. The problem of their progressive structures development with the possibility of minimal damage of grain materials remains important. The paper presents Recommendations for the auger rotation speed selection in order to minimize the damage of brittle elements and products are presented in this paper. The rational angle at which productivity of the screw conveyor reaches its maximum values is deteermined.

Mathematical planning of experiments to determine optimal conditions for biological conservation of the heart

1972 ◽  
Vol 74 (6) ◽  
pp. 1553-1556
Author(s):  
S. M. Chilaya ◽  
Ya. I. Gondzhilashvili ◽  
Z. A. Bolotashvili ◽  
A. N. Dadiani
Keyword(s):  
Biological Conservation ◽  
Optimal Conditions ◽  
Mathematical Planning ◽  
Planning Of Experiments

scholarly journals Parameters of the angle-lift of the front plow for smooth, rowless plowing

2021 ◽  
Vol 264 ◽  
pp. 04042
Author(s):  
Nikolay Aldoshin ◽  
Sherzod Kurbanov ◽  
Akmal Abdullaev ◽  
Alham Khujayev ◽  
Dilsabo Choriyeva
Keyword(s):  
Carbon Monoxide ◽  
Experimental Studies ◽  
Energy Costs ◽  
Mathematical Planning ◽  
Quality Performance ◽  
Side Face ◽  
Required Quality ◽  
Theoretical Mechanics ◽  
Planning Of Experiments

To improve the quality and energy indicators on the front plow in front of the housings, the angle axes are installed in the form of a triangular wedge. The purpose of the study is to substantiate the parameters of the angle-lift of the front plow, which provides high-quality performance of the technological process according to agrotechnical requirements with the lowest energy costs for smooth, rowless plowing. The research uses the laws and rules of theoretical mechanics, mathematical statistics, mathematical planning of experiments, and methods of strain measurement, as well as the methods given in existing regulatory documents. Based on the study of the process of interaction of the carbon monoxide with the soil, analytical dependences are obtained that allow us to determine the parameters of the carbon monoxide. According to the results of theoretical and experimental studies, it was found that the required quality of tillage with a front plow following the established agrotechnical requirements with minimal energy consumption is provided at the height of 22 cm, a length of 27 cm, a wing angle of 32° and an angle of inclination of the side face of 36°.

scholarly journals Modified Organosilica Adsorbents with Bactericidal Properties

2002 ◽  
Vol 20 (3) ◽  
pp. 285-293 ◽  
Author(s):  
T.I. Denisova ◽  
D.I. Shvetz
Keyword(s):  
Structural Characteristics ◽  
Pathogenic Microorganisms ◽  
Optimal Conditions ◽  
Mathematical Planning ◽  
Sorptive Capacity ◽  
E Coli ◽  
Inhibiting Effect ◽  
Bactericidal Properties ◽  
Modified Forms ◽  
Planning Of Experiments

The method of mathematical planning of experiments has been used to determine the optimal conditions for the formation of a two-component organosilica with various compositions modified by metal ions (CuII, ZnII) sorbed from their water–ammonia solutions. Through this method, modified forms of silico-polymethylsiloxanes (SG-PMS) containing 1–30 mg/g CuII ion [SG-PMS(Cu)] and 3–40 mg/g ZnII ion [SG-PMS(Zn)] were synthesized and their adsorption/structural characteristics established. The sorptive capacity of the organosilica sorbents and their modified forms towards pathogenic microflora ( E. coli, S. aureus, P. aeruginosa), which depend on the concentration of the modified component, the pH of the medium and the sorptional composition, has been evaluated. It was found that the sorption levels of microorganisms increased in the following sorbent-modified range: 30:70 wt% SG-PMS(Al) < 50:50 wt% SG-PMS(Zn) < 50:50 wt% SG-PMS(Cu) and attained values in the range of 81–98% for metal-containing forms depending on the pH of the medium and the nature of the microorganisms. Copper-containing forms of organosilica exhibited an inhibiting effect towards pathogenic microorganisms even at CuII ion-containing contents of only 1 mg/g.

Investigation of the isomerization of cyclohexane on a palladium-zeolite catalyst by the method of mathematical planning of experiments

1975 ◽  
Vol 24 (9) ◽  
pp. 1829-1833
Author(s):  
V. I. Garanin ◽  
V. V. Kharlamov ◽  
V. N. Pisarenko ◽  
A. G. Pogorelov ◽  
T. A. Isakova ◽  
...  
Keyword(s):  
Zeolite Catalyst ◽  
Mathematical Planning ◽  
Planning Of Experiments

Selection of Burning Devices Designs for Cylindrical Tube Furnaces

10.12737/142 ◽  
2012 ◽  
Vol 1 (4) ◽  
pp. 54-58
Author(s):  
Косыгин ◽  
V. Kosygin ◽  
Катин ◽  
V. Katin ◽  
Вольхин ◽  
...  
Keyword(s):  
Rational Design ◽  
Cylindrical Tube ◽  
Mathematical Planning ◽  
Tube Furnaces ◽  
Planning Of Experiments ◽  
Selection Of

With the method of mathematical planning of experiments was carried out the selection of rational design of gas burners for vertical cylindrical tube furnaces.

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