Developing a Method of Hydroerosive Saturation of Liquids with Microparticles of Target Materials Using Ultrajet

2020 ◽  
pp. 3-14
Author(s):  
A.L. Galinovsky ◽  
Myo Htet KYAW ◽  
A.S. Provatorov
Keyword(s):  
Experimental Studies ◽  
Material Surface ◽  
Traditional Methods ◽  
Operating Modes ◽  
Factors Influencing

This paper presents a study on innovative use of ultrajet technologies and expanding their areas of applications. Factors influencing the process of ultrajet dispersing are determined, based on which special tooling is developed and operating modes and parameters are selected. The results of experimental studies on dispersing silver and copper targets are presented. The composition of the obtained suspensions and features of the particles formed in the process of hydroerosion of the material surface (targets) are examined. It is determined that the proposed technology possesses broad capabilities and advantages compared to traditional methods of obtaining suspensions.

scholarly journals The results of studies of eccentric tillage roller

2019 ◽  
Vol 126 ◽  
pp. 00010
Author(s):  
Ivan Sharonov ◽  
Vladimir Kurdyumov ◽  
Viktor Kurushin
Keyword(s):  
Experimental Studies ◽  
Soil Treatment ◽  
Dynamic Force ◽  
Theoretical Studies ◽  
Soil Density ◽  
Operating Modes ◽  
Factors Influencing ◽  
The Relationship ◽  
Required Quality

Developed by eccentric tillage rink, which ensures the desired quality of the soil and increase the yield of crops. As a result of theoretical studies, an expression for determining the dynamic force that increases the intensity of crumbling soil lumps, depending on the regime parameters of the rink. In addition, the relationship between the power required when driving the rink, its parameters. The factors influencing the process of tillage by the developed roller are determined. As a criterion of optimization, the adopted coefficient of compliance with for the density soil of benchmark, which characterizes the quality of soil rolling from the position of compliance of soil density with agrotechnical requirements. As a result of experimental studies, the parameters and operating modes of the roller are optimized, at which the required quality of soil treatment is achieved.

DIESEL ENGINE OPERATION IN USE OF FUEL WITH ADDITIVES

2018 ◽  
pp. 18-24
Author(s):  
Petar Kazakov ◽  
Atanas Iliev ◽  
Emil Marinov
Keyword(s):  
Diesel Engine ◽  
Fuel Consumption ◽  
Diesel Fuel ◽  
Internal Combustion Engines ◽  
Experimental Studies ◽  
Combustion Engines ◽  
Engine Operation ◽  
Factors Affecting ◽  
Operating Modes ◽  
Positive Effects

Over the decades, more attention has been paid to emissions from the means of transport and the use of different fuels and combustion fuels for the operation of internal combustion engines than on fuel consumption. This, in turn, enables research into products that are said to reduce fuel consumption. The report summarizes four studies of fuel-related innovation products. The studies covered by this report are conducted with diesel fuel and usually contain diesel fuel and three additives for it. Manufacturers of additives are based on already existing studies showing a 10-30% reduction in fuel consumption. Comparative experimental studies related to the use of commercially available diesel fuel with and without the use of additives have been performed in laboratory conditions. The studies were carried out on a stationary diesel engine СМД-17КН equipped with brake КИ1368В. Repeated results were recorded, but they did not confirm the significant positive effect of additives on specific fuel consumption. In some cases, the factors affecting errors in this type of research on the effectiveness of fuel additives for commercial purposes are considered. The reasons for the positive effects of such use of additives in certain engine operating modes are also clarified.

scholarly journals Research on Formation Mechanism of Dynamic Response and Residual Stress of Sheet Metal Induced by Laser Shock Wave

2018 ◽  
Vol 167 ◽  
pp. 05007
Author(s):  
Aixin Feng ◽  
Yupeng Cao ◽  
Heng Wang ◽  
Zhengang Zhang
Keyword(s):  
Shock Wave ◽  
Residual Stress ◽  
Dynamic Response ◽  
Formation Mechanism ◽  
Experimental Studies ◽  
Material Surface ◽  
Propagation Mechanism ◽  
Laser Shock ◽  
Surface Residual Stress ◽  
Laser Shock Wave

In order to reveal the quantitative control of the residual stress on the surface of metal materials, the relevant theoretical and experimental studies were carried out to investigate the dynamic response of metal thin plates and the formation mechanism of residual stress induced by laser shock wave. In this paper, the latest research trends on the surface residual stress of laser shock processing technology were elaborated. The main progress of laser shock wave propagation mechanism and dynamic response, laser shock, and surface residual stress were discussed. It is pointed out that the multi-scale characterization of laser and material, surface residual stress and microstructure change is a new hotspot in laser shock strengthening technology.

Predictors of lexical retrieval in Hindi–English bilingual speakers

2019 ◽  
Vol 23 (2) ◽  
pp. 265-273
Author(s):  
Keerthi Ramanujan ◽  
Brendan S. Weekes
Keyword(s):  
Lexical Access ◽  
Experimental Studies ◽  
Naming Task ◽  
Mixed Effects ◽  
Lexical Retrieval ◽  
Linear Mixed Effects ◽  
Bilingual Speakers ◽  
Factors Influencing ◽  
English Bilingual ◽  
First Time

AbstractWhen bilinguals name pictures while in ‘monolingual mode’, we expect that under conditions of language-constraint and no cognate facilitation, factors influencing lexical retrieval in monolinguals ought to exert similar effects on bilinguals. To this end, we carried out a L1-only naming task on early Hindi–English bilinguals. Results of linear mixed effects analysis reveal AoA, Familiarity, Image Agreement and Codability (availability of alternate names) to be the most significant predictors of lexical retrieval speed for early bilinguals, confirming our expectations. However, we report, for the first time, a by-subject variation in Codability for bilinguals. Implications of the results are discussed in the context of current theories of bilingual lexical access and competition. In preparation for this study, Hindi norms from bilinguals for items in the Snodgrass and Vanderwart set have been established, which will be of use for stimuli selection in experimental studies involving bilinguals.

The Design of Melting Units for Production of Synthetic Fibrous Materials by Vertical Blowing Method from PET Raw Materials

2019 ◽  
Vol 952 ◽  
pp. 216-222
Author(s):  
Vladislav Sviatskii ◽  
Andrea Mudriková ◽  
Radovan Holubek ◽  
Jakub Horník ◽  
Mikhail Sokolov
Keyword(s):  
High Performance ◽  
Raw Materials ◽  
Pressure Change ◽  
Material Surface ◽  
Fibrous Materials ◽  
Cylindrical Chamber ◽  
Molten Material ◽  
Operating Modes ◽  
Technology Of Production ◽  
Process Productivity

This paper presents the technology of production of synthetic fibrous materials from PET-raw by vertical blowing method. The formation of fibers from the melt of thermoplastics by vertical blowing method is accompanied by complex and specific phenomena, so creation of new progressive technologies, high-performance machines and units for producing such materials is impossible without process modeling, which can significantly reduce the number of natural tests, cost and development time and choose optimal operating modes. The motion of the molten material in the melting unit of the hydrostatic type is determined from the Poiseuille formula. Also in the article proved that the greatest impact on process productivity is made by the melting unit, exactly by outlet radius and the pressure change of compressed air, acting on the molten material surface. The increase in the height of the molten material column in the main cylindrical chamber of melting unit also leads to increase of process productivity.

scholarly journals Factors Influencing E-Procurement Practice in Pakistan

2019 ◽  
Vol 10 (2) ◽  
pp. 1
Author(s):  
Amish Aqeel ◽  
Muhammad Asim
Keyword(s):  
Quantitative Study ◽  
Organizational Support ◽  
Electronic Systems ◽  
Traditional Methods ◽  
Factors Influencing ◽  
Informational Technology ◽  
Procurement System ◽  
Current Practices

The concept of E-procurement has been widely spread with the growing use of informational technology in every field. Organizations are adopting methods of procurements that are more reliable, less time consuming and relatively stronger than the traditional methods. This quantitative study investigates factors influencing e-procurement practice in Karachi, Pakistan. A sample of 319 respondents was taken to observe the influence of internal organizational support, integration with suppliers’ electronic systems, supplier willingness, perceived improvements to purchasing tasks and supplier pressure on e-procurement intention. The results information indicates that internal organizational support, supplier willingness and perceived improvements to purchasing tasks significantly influences e-procurement intentions. However, the factors integration with suppliers’ electronic systems and supplier pressure does not have any significant impact on e-procurement intention. The result recommends the use of e-procurement system for organizations to facilitate the current practices of procurement.

Simulation and experimental studies of the factors influencing the frequency spectrum of cardiac extracellular waveforms

1990 ◽  
Vol 23 (2) ◽  
pp. 109-125 ◽  
Author(s):  
Diane Joly ◽  
Pierre Savard ◽  
Fernand A. Roberge ◽  
Michel Vermeulen ◽  
Mohammad Shenasa
Keyword(s):  
Frequency Spectrum ◽  
Experimental Studies ◽  
Factors Influencing
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