scholarly journals CHOICE THE RESTORING METHOD OF DETAILS BY QUALITY CRITERIA

2020 ◽  
Vol 1 (46) ◽  
pp. 83-91
Author(s):  
Horbenko S ◽  
Keyword(s):  
Surface Layer ◽  
Technological Process ◽  
Quality Criteria ◽  
Technological Parameters ◽  
Ion Nitriding ◽  
Optimal Method ◽  
Advantages And Disadvantages ◽  
Modification Process ◽  
Object Of Study ◽  
Quantitative Indicators

The purpose of the article is to analyze the existing methods of surface layer modification and to choose such a method of restoration of parts, which takes into account the quality criteria that affect the op­erational properties and ensure their required level after the modification process. The main methods of surface layer modification are considered in the article, the main advantages and disadvantages of technological process that can be applied are analyzed and systematized. In the article quantitative indicators of the main technological parameters of each of the considered methods of restoration of operational properties are considered and presented as a table. According to the results of the analysis, a method for choosing a rational technological process of res­toration was proposed and criteria were formed according to which the most optimal method of surface layer modification would be fulfilled. . The object of study is the quality criteria and the basic methods for restoring the performance of en­gine parts that satisfy these criteria. Using the developed methodology and the data from Table 2, a diagram of the dependence of energy consumption costs, which will be consumed when provided with a layer of certain hardness for a given thickness, was constructed. Based on the analysis, which included a comparison of the characteristics of surface hardening meth­ods and their evaluation by quality criteria, it was found that the most promising method is ion nitriding and laser thermal hardening. KEYWORDS: MODIFICATION, SURFACE LAYER, RESTORATION, QUALITY CRITERIA

scholarly journals ANALYSIS OF EXTERNAL ENGINEERING NETWORK METHODS

2020 ◽  
Vol 4 (157) ◽  
pp. 7-11
Author(s):  
V. Zhvan ◽  
V. Donenko ◽  
S. Kulish ◽  
A. Taran
Keyword(s):  
Physical And Mechanical Properties ◽  
Directional Drilling ◽  
Horizontal Directional Drilling ◽  
Technological Parameters ◽  
Optimal Method ◽  
Advantages And Disadvantages ◽  
Analytical Review ◽  
Conducting Research ◽  
The Cost ◽  
Selection Of

The article is devoted to the effective analysis of trench and trenchless pipeline laying technologies. In the course of the work, an analytical review of pipeline assembly was performed, the main technological parameters, the scope of each method, and their advantages and disadvantages were determined. List of considered pipeline laying methods: trenching, horizontal directional drilling, mechanical puncture, hydraulic puncture, microtunneling and punching. The article analyzes the classical trench method and the most widely used trenchless ones: horizontal directional drilling; mechanical puncture; hydraulic puncture; microtunneling; punching. Each of these methods has several advantages and disadvantages. The choice of the optimal method of laying the pipeline depends on many factors: the physical and mechanical properties of soils and hydrogeological conditions, the length and diameter of the pipeline, the presence of other communications, buildings and structures, as well as the budget that customers have. Work time is the last deciding factor. Based on the results of the analysis of pipeline laying technologies and expert survey of construction industry experts, the cost table of each method was compiled, outlining the main characteristics of the technology: length of pipeline, speed of work, scope, cost, and the advantages and disadvantages of each of the considered methods. The conclusions about the use of each of the pipeline laying methods were made. Each of the methods has its advantages and disadvantages, so to choose the method of work it is necessary to conduct a comprehensive assessment of technological parameters, cost, scope and timing of work. The cost of lay-ing the pipeline consists of the following factors: conducting research; selection of diameter and determination of pipeline length; choice of laying method and equipment necessary for the works; selection of equipment, shut-off and control equipment and other materials arranged on the pipeline; terms of performance of works. Taking into account these factors, an estimate is made, which determines the cost of installation of a particular pipeline. After the analysis, we can conclude that among the methods of trenchless laying of pipelines can be identi-fied horizontally directional drilling, it is this method of laying the pipeline will be appropriate to use for our region. The drilling technique allows to carry out pipelines under obstacles, to pull long segments of networks, to repair site damage. This method is universal and can be used in almost any environment. Keywords: trenches, horizontal directional drilling, mechanical puncture, hydraulic piercing, microtunnelling, punching, pipeline.

scholarly journals The study on the development of the technology of the Sedum maximum juice as a biogenic stimulator for obtaining medicines

2021 ◽  
pp. 14-20
Author(s):  
O. I. Burban ◽  
L. I. Vyshnevska ◽  
T. M. Zubchenko
Keyword(s):  
Rapid Heating ◽  
Quality Criteria ◽  
Wide Distribution ◽  
Biologically Active ◽  
Raw Material ◽  
Technological Parameters ◽  
Optimal Method ◽  
Pre Treatment ◽  
Color Reactions ◽  
Active Substances

Due to the complex of biologically active substances (BAS) in the native state, juices are becoming increasingly popular in pharmacy and medicine. We were interested in the Sedum maximum plant as a powerful biogenic stimulant. Despite its wide distribution in the world and in Ukraine, plants of the Sedum L. genus are rarely used. The aim of the study is to determine the technological parameters of the process of obtaining juice from Sedum maximum for the development of technology for its production in pharmacy and industrial conditions and further use in pharmacy and medicine. Results. The optimal method of obtaining fresh juice from Sedum maximum grass using a number of technological techniques in the following sequence was substantiated: fermentation of Sedum maximum grass (keeping in a dark cool place (5 ± 3 ºC) for 5 days; pre-treatment of Sedum maximum grass raw material with boiling water; keeping the crushed raw material at a temperature of 5 ± 3 ºC during the day, purification of unclarified juice with rapid heating to 75-78 °C for 30 min followed by rapid cooling and treatment with 95 % ethanol, sedimentation of Sedum maximum grass juice at a temperature of 5 ± 3 ºC followed by stabilization of clarified juice of Sedum maximum grass with ethanol 15% and chloroethane in the amount of 0.5 %. Conclusions. The quality criteria of the obtained Sedum maximum juice were determined: appearance, pH, dry residue, identification by color reactions and quantitative determination by spectrophotometry (sum of tannins, in terms of pyrogalol). Key words: juice; Sedum maximum; technology; biogenic stimulant

Methodology for developing a combined technological process based on modifying the properties and changing the surface layer parameter

2020 ◽  
pp. 24-31
Author(s):  
V.N. Gadalov ◽  
E.A. Filatov ◽  
A.V. Filonovich
Keyword(s):  
Surface Layer ◽  
Technological Process ◽  
Acoustic Properties ◽  
Scientific Concept ◽  
Regulatory Documents ◽  
Layer Parameter ◽  
Metal Microstructure ◽  
System Errors

The article reveals information links between acoustic properties and parameters of the metal microstructure. A large number of regulatory documents and a lack of scientific concept lead to the system errors when estimating condition of both longterm operating metal and the product in the whole. The article considers methodology for developing a combined technological process based on modification of properties and change of the coatings' surface layer parameters, with an estimation of their efficiency in terms of productivity based on the criterial use of productivity principles. The analysis of technological activities for the productivity coefficient and the criterial estimates confirmed their efficiency.

DEVELOPMENT OF AN ALGORITHM FOR FINDING ANOMALIES IN WEATHER REPORTS TO IMPROVE THE QUALITY OF FORECASTS

2021 ◽  
pp. 45-52
Author(s):  
K. G. Yashchenkov ◽  
K. S. Dymko ◽  
N. O. Ukhanov ◽  
A. V. Khnykin
Keyword(s):  
Optimal Method ◽  
Implementation Processes ◽  
Advantages And Disadvantages ◽  
Message Exchange ◽  
Text Information ◽  
Preliminary Preparation ◽  
Using Data ◽  
The Moment

The issues of using data analysis methods to find and correct errors in the reports issued by meteorologists are considered. The features of processing various types of meteorological messages are studied. The advantages and disadvantages of existing methods of classification of text information are considered. The classification methods are compared in order to identify the optimal method that will be used in the developed algorithm for analyzing meteorological messages. The prospects of using each of the methods in the developed algorithm are described. An algorithm for processing the source data is proposed, which consists in using syntactic and logical analysis to preclean the data from various kinds of noise and determine format errors for each type of message. After preliminary preparation the classification method correlates the received set of message characteristics with the previously trained model to determine the error of the current weather report and output the corresponding message to the operator in real time. The software tools used in the algorithm development and implementation processes are described. A complete description of the process of processing a meteorological message is presented from the moment when the message is entered in a text editor until the message is sent to the international weather message exchange service. The developed software is demonstrated, in which the proposed algorithm is implemented, which allows to improve the quality of messages and, as a result, the quality of meteorological forecasts. The results of the implementation of the new algorithm are described by comparing the number of messages containing various types of errors before the implementation of the algorithm and after the implementation.

Approaches to the Organization of International Accounting in Russian Enterprises

TEM Journal ◽  
2021 ◽  
pp. 249-258
Author(s):  
Ekaterina V. Surkova ◽  
Galina A. Skachko ◽  
Larisa K. Nikandrova ◽  
Maria M. Starkova ◽  
Nina F. Sakharova
Keyword(s):  
Financial Reporting ◽  
Accounting Information ◽  
Financial Statements ◽  
Reporting Standards ◽  
Optimal Method ◽  
Accounting Standard ◽  
Financial Reporting Standards ◽  
Advantages And Disadvantages ◽  
The Individual ◽  
Selection Of

The article discusses current issues of transformation of accounting information in accordance with international financial reporting standards (IFRS). This study is primarily aimed at developing approaches that determine the need for Russian enterprises to provide accounting information comparable at the international level. The authors analyze methods of transferring data from the Russian Accounting Standard (RAS) to IFRS. The methods used to form financial statements in accordance with IFRS are discussed. The issues of the application of these methods, as well as their advantages and disadvantages, are discussed. The author's approach to the selection of the optimal method of transformation is proposed taking into account the individual needs of organizations.

scholarly journals 4DCT radiotherapy for NSCLC: a review of planning methods

2014 ◽  
Vol 14 (1) ◽  
pp. 70-79 ◽  
Author(s):  
A. Hutchinson ◽  
P. Bridge
Keyword(s):  
Computed Tomography ◽  
Radiation Therapy ◽  
Early Stage ◽  
Organs At Risk ◽  
Patient Comfort ◽  
Or Education ◽  
Optimal Method ◽  
Early Stage Disease ◽  
Advantages And Disadvantages ◽  
Stage Disease

AbstractPurposeTo establish whether the use of a passive or active technique of planning target volume (PTV) definition and treatment methods for non-small cell lung cancer (NSCLC) deliver the most effective results. This literature review assesses the advantages and disadvantages in recent studies of each, while assessing the validity of the two approaches for planning and treatment.MethodsA systematic review of literature focusing on the planning and treatment of radiation therapy to NSCLC tumours. Different approaches which have been published in recent articles are subjected to critical appraisal in order to determine their relative efficacy.ResultsFree-breathing (FB) is the optimal method to perform planning scans for patients and departments, as it involves no significant increase in cost, workload or education. Maximum intensity projection (MIP) is the fastest form of delineation, however it is noted to be less accurate than the ten-phase overlap approach for computed tomography (CT). Although gating has proven to reduce margins and facilitate sparing of organs at risk, treatment times can be longer and planning time can be as much as 15 times higher for intensity modulated radiation therapy (IMRT). This raises issues with patient comfort and stabilisation, impacting on the chance of geometric miss. Stereotactic treatments can take up to 3 hours to treat, along with increases in planning and treatment, as well as the additional hardware, software and training required.ConclusionFour-dimensional computed tomography (4DCT) is superior to 3DCT, with the passive FB approach for PTV delineation and treatment optimal. Departments should use a combination of MIP with visual confirmation ensuring coverage for stage 1 disease. Stages 2–3 should be delineated using ten-phases overlaid. Stereotactic and gated treatments for early stage disease should be used accordingly; FB-IMRT is optimal for latter stage disease.

scholarly journals RESEARCH OF QUALITY FORMATION OF TRANSPORT SERVICES BY PASSENGER TRANSPORT ENTERPRISES OF EU

2021 ◽  
Vol 49 (2) ◽  
pp. 122-130
Author(s):  
Nazarenko I ◽  
Keyword(s):  
Quality Criteria ◽  
Modern Society ◽  
Enterprise Management ◽  
Passenger Transport ◽  
Global Trends ◽  
Transport Services ◽  
Object Of Study ◽  
The Cost ◽  
Transport Complex

The article examines the processes, criteria and factors to ensure the quality of passenger transport services. Object of study - processes to ensure the quality of passenger transport services in the context of European integration of Ukraine. Purpose - a study of the world experience in the formation of the concept of quality of transport services, summarizing the main factors that affect the quality of transport services, as well as the main criteria affecting the qualitative characteristics of the services of the transport. Method study - generalization of fundamental works of Ukrainian and foreign scientists of economists is in the internal checking system, dialectical going, fundamental positions of economic theory, system-logical approach near research of the economic phenomena and processes. Satisfaction the needs of society and economy of passenger transport services depends on the quality and timeliness of those services. Questions of quality passenger transport services are interested in users of transport services, companies providing them. However, the requirements and the basic criteria for assessing the quality they are different. If the passenger transport enterprise interested in providing their services with minimal effort and money, the service users in their assessment pay attention not only on the cost of services, but also on transport safety, comfort, delivery time, etc.. The quality of the transport concept of integrated services, which is constantly being developed and improved. Global trends show that the quality of transport services must ensure the needs and expectations of consumers. Accordingly, it is increasing the importance of defining the qualities that affect the quality of service. Given the transient and dynamic nature of modern society and the lifestyle of the main consumers of the services the system factors and quality criteria must be flexible and dynamic to meet the industry's competitiveness on the European market of services. Awareness of the main criteria for assessing the quality of services will help to identify potential strengths and weaknesses. This will help improve not only the quality but also the process of enterprise management, industry, improve customer satisfaction of services received, will increase competitiveness. The results of the article can be inculcated in-process services of enterprises of a transport complex. KEYWORDS: QUALITY, TRANSPORT SERVICE. CRITERIA of QUALITY, TRANSPORT.

scholarly journals Problems of Analyzing Microstructure Images in Assessing the Impact of Technological Parameters of Combined Strain Wave Hardening on the Quality of the Surface Layer

2019 ◽  
Author(s):  
Андрей Киричек ◽  
Andrey Kirichek ◽  
Дмитрий Соловьев ◽  
Dmitriy Solovyev ◽  
Александр Хандожко ◽  
...  
Keyword(s):  
Surface Layer ◽  
Thermal Treatment ◽  
Strain Wave ◽  
Technological Parameters ◽  
Steel Microstructure ◽  
Main Indicator ◽  
Metallographic Images ◽  
Surface Layer Quality ◽  
The Impact

The problems of analyzing metallographic images and the method of their solution using modern software for the analysis of metallographic images are described. There is given an analysis of microstructure images as the main indicator of the surface layer quality by the example of studying the research results of strain wave hardening combinations and chemical-thermal treatment, in particular the influence of previous strain wave hardening and subsequent thermal and chemical- thermal treatment on the alloy steel microstructure or previous thermal and chemical- thermal treatment and subsequent strain wave hardening. On the basis of the analysis the effectiveness of strain wave hardening and chemical and thermal treatment is established.

scholarly journals IMPROVING THE EFFICIENCY OF FIBRE CONCRETE PRODUCTION

2020 ◽  
pp. 4-9
Author(s):  
V. Nelyubova ◽  
V. Babaev ◽  
Nataliya Alfimova ◽  
S. Usikov ◽  
O. Masanin
Keyword(s):  
Building Materials ◽  
Production Efficiency ◽  
Raw Materials ◽  
Basalt Fiber ◽  
Operational Reliability ◽  
Fiber Reinforced Concrete ◽  
Technological Parameters ◽  
Optimal Method ◽  
Physicomechanical Characteristics ◽  
Concrete Production

fiber concrete is one of the types of effective building materials that ensure the operational reliability of structures due to a set of unique properties. However, the maximum physicomechanical characteristics of this type of products are achieved only if the fiber is evenly distributed in the concrete matrix and the optimum ratio of raw materials is reached. In this connection, the aim of the work was to increase the production efficiency of fiber-reinforced concrete by optimizing the formulation and technological parameters of its manufacture. The optimal method of introducing the fiber into the concrete mix and the type of superplasticizer were previously determined, which allowed ensuring the maximum physicomechanical characteristics of the products. Optimization of prescription parameters was carried out using the method of mathematical planning of the experiment, where the amount of cement, superplasticizer and basalt fiber were varied. After processing the results, the dependences of the compressive strength on variable factors were obtained, which would allow to select the optimal dosages of raw materials for given mechanical characteristics of the products.

scholarly journals MODERN METHODS OF THE TREATMENT OF ESOPHAGEAL STRICTURES IN BULLOUS EPIDERMOLYSIS CHILDREN

2019 ◽  
Vol 21 (1) ◽  
pp. 54-61
Author(s):  
Artem V. Tupylenko ◽  
M. M. Lokhmatov ◽  
N. N. Murashkin ◽  
V. I. Oldakovskiy
Keyword(s):  
Esophageal Stenosis ◽  
Optimal Method ◽  
Advantages And Disadvantages ◽  
Endoscopic Gastrostomy ◽  
Treatment And Prevention ◽  
Fluoroscopic Control ◽  
Esophageal Strictures ◽  
Modern Methods ◽  
Peg Tube ◽  
Surgical Operations

The review presents modern approaches to the treatment and prevention of the benign esophageal stenosis in epidermolysis bullosa (EB) children. There are discussed advantages and disadvantages of such main methods as conservative, intraluminal recanalization, and surgical operations used in the treatment of esophageal strictures in EB patients. The features of anesthesia in BE patients are described. Balloon dilatation of esophageal strictures under endoscopic or fluoroscopic control has been shown to be the optimal method of treating patients. In severe BE children with refractory esophageal stenosis, developmental delay, and nutritional status disorders, to perform hyperalimentation by virtue of the percutaneous endoscopic gastrostomy (PEG) tube is recommended.

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