Impact Assessment of Non-Technological Fluid Accumulations in the Cavity of an Existing Gas Pipeline on the Energy Efficiency of Its Operation

The given methodology for assessing the efficiency coefficient of a gas pipeline based on the determination of a new informative parameter - the maximum level of non-technological fluid accumulations in its cavity. The proposed methodological approaches make it possible to respond faster regarding the removal of critical volumes of accumulated fluid from the gas pipeline cavity in order to maintain its energy and operational efficiency at the proper level.

Download Full-text

Performance Evaluation of Heading-and-Winning Machines in the Conditions of Potash Mines

Applied Sciences ◽

10.3390/app11083444 ◽

2021 ◽

Vol 11 (8) ◽

pp. 3444

Author(s):

Sergey A. Lavrenko ◽

Dmitriy I. Shishlyannikov

Keyword(s):

Energy Efficiency ◽

Experimental Studies ◽

Efficiency Coefficient ◽

Mechanized Method ◽

Methodological Approaches ◽

The Stability ◽

Technical Solutions ◽

Potash Mine ◽

Complex Indicators ◽

Potassium Magnesium

The authors focus on the process of potash ore production by a mechanized method. They show that currently there are no approved procedures for assessing the performance of heading-and-winning machines operating in the conditions of potash mines. This causes difficulties in determining the field of application of heading-and-winning machines, complicates the search for implicit technical solutions for the modernisation of existing models of mining units, prohibits real-time monitoring of the stability of stope-based technological processes and makes it difficult to assess the performance of the services concerning mining enterprises. The work represents an aggregate assessment of the performance of heading-and-winning machines for potash mines by determining complex indicators describing the technological and technical levels of organising the work in stopes. Such indicators are the coefficients of productivity and energy efficiency, respectively. Experimental studies have been carried out in the conditions of the potash mine of the Verkhnekamskoye potassium-magnesium salt deposit to assess the performance of the latest and most productive Ural-20R heading-and-winning machines manufactured in Russia. Using the above methodological approaches, this paper shows that the unsatisfactory technological performance of the studied machine is due to the low productivity of the mine district transport. The average productivity coefficient was 0.29. At the same time, high values of the energy efficiency coefficient show that the productivity of the machine is on par with design conditions.

Download Full-text

EXERGOECONOMIC APPROACH TO THE PROBLEMS OF ENERGY CONSUMPTION ASSESSMENT IN HOUSING AND COMMUNAL SERVICES OF UKRAINE

Collection of scholarly papers of Dniprovsk State Technical University (Technical Sciences) ◽

10.31319/2519-2884.37.2020.11 ◽

2021 ◽

Vol 2 (37) ◽

pp. 59-63

Author(s):

I. Dolgopolov ◽

V. Tuchin ◽

D. Marchenko

Keyword(s):

Energy Efficiency ◽

Natural Gas ◽

Water Supply ◽

Energy Savings ◽

Price Policy ◽

Energy Flows ◽

Just Price ◽

The Given

An attempt to use the base thermodynamics and exergoeconomic aspects of decision tasks of energy efficiency and energy saving with the examples of in heat-, gas- and watersupply in housing and communal services of Ukraine is presented. The methodology of forming the analytical dependences of account and payment of the got and used heat is presented as a result of this approach. This system of account has the followings advantages: 1) the sum of payment takes into account not only an amount but also quality of energy flows; 2) efficiency of work of all elements of this system is taken into account. The operating presently system of tariffs on natural gas does not take into account current composition of gas and exergy of gas. Dependence, which takes into account the real exergy of natural gas which is supplied, is offered in relation to the minimum exergy of natural gas, which is foreseen DSTU. At forming of cost of water-supply in dependence for determination of sum of payment for water is suggested to enter a constituent, which takes into account the exergy of stream of water, which influences the amount and pressure of the given water. Realization in practice of the exergyeconomic going near tariffs on energy which is consumed in housing and communal services of Ukraine allows from single power positions objectively to estimate efficiency of functioning of all elements of the systems heat-, gaz- and water-supplys. It allows practically to carry out market approach to forming of tariffs on heat-, gaz- and water-supply and to mobilize producers, suppliers and users of services, in this sphere of housing and communal services of Ukraine on an energy-savings and energy efficiency. It is necessary to expect that introduction of these principles has social influence because it is a step which unites the citizens of Ukraine in the decision of tasks of establishment of transparent and just price policy of the state in housing and communal services of Ukraine and improvements of situations with ecology in our country.

Download Full-text

Introduction of Norms for Air Exchange in Rooms and Energy Efficiency of Residential Buildings

Science & Technique ◽

10.21122/2227-1031-2018-17-4-306-313 ◽

2018 ◽

Vol 17 (4) ◽

pp. 306-313

Author(s):

L. V. Borukhava ◽

A. S. Shybeka

Keyword(s):

Energy Efficiency ◽

Heat Balance ◽

Thermal Protection ◽

Residential Buildings ◽

Combustion Process ◽

Residential Area ◽

Heat Losses ◽

The Given ◽

Air Exchange

Energy saving policy conducted all over the world and in Belarus, particularly, leads to revision of technical standard and legal acts on thermal protection of buildings. Gradual increase of resistance to heat transfer of enclosing structures reduces transmission heat losses however expenses on infiltration air heating remain unchangeable. Due to this their portion in overall heat balance of residential buildings is gradually increasing: up to thermal rehabilitation of a building the portion constitutes 30 %, after this process the portion is equal to 53 %. In order to find methods for reduction of heat losses the paper considers an origin of the current standard for inlet air which is equal to 3 m³/h per 1 m² of residential area. It has been shown that the given value has been determined on the assumption of air exchange which is required for assimilation of carbon dioxide and residential area standard per one person. The required air exchange can be reduced up to 1.5 m³/(h×m²) due to improvement of population living conditions and increase in provision of residential area. Calculations have also shown that the given reduction makes it possible to enhance energy efficiency class of a building and decrease portion of heat losses on heating inlet air in overall heat balance. The paper has also revealed that rational light location on both sides permits to reduce a specific index of heat energy consumption for heating and ventilation of a residential building. Determination of outlet air consumption for kitchens has been considered simultaneously with determination of inlet air consumption. It has been ascertained that in order to support combustion process and removal of combustion products consumption of outlet air must constitute 10–20 m³/h according to type of gas stove. Due to the fact that windows can not support the proposed and existing air exchanges they must be completed with plenum valves.

Download Full-text

The Role and Place of Budget Procedure in the System

Voprosy Ekonomiki ◽

10.32609/0042-8736-2003-5-42-49 ◽

2003 ◽

pp. 42-49 ◽

Cited By ~ 1

Author(s):

E. Bushmin

Keyword(s):

Budget Process ◽

Public Expenditures ◽

Principal Role ◽

Process Trends ◽

The Given ◽

Rules Of The Game

The article is devoted to the analysis of improving budget process trends. The author offers the concept of "financial technologism". Its usage should promote an essential improvement of the budget process. The given concept is based on the fact that the regulation of budget procedure is the process of determination of "rules of the game", and the order of interaction of different institutions within the framework of the budget process, and the trends and volumes of expenses are the strategy of institutions. The procedure within the budget process plays a principal role as compared with the trends and volumes of public expenditures.

Download Full-text

ІНТЕРПРЕТАЦІЯ КАТЕГОРІЇ РОЗВИТКУ В СУЧАСНІЙ ПСИХОЛОГІЇ

Psychology of Personality ◽

10.15330/ps.8.1.22-30 ◽

1970 ◽

Vol 8 (1) ◽

pp. 22-30

Author(s):

Анжеліка Шамне

Keyword(s):

Cultural Context ◽

Developmental Psychology ◽

Structure And Dynamics ◽

Modern Psychology ◽

Development Site ◽

Approaches To Study ◽

Methodological Approaches ◽

Self Motion

У статті розглянуто сучасні підходи до інтерпретації категорії розвитку, розкрито теоретичні та методологічні підходи до вивчення категорії розвитку у сучасній психології, визначено її психологічний зміст, моделі, структуру та динаміку. Категорія розвитку розглядається як епіцентр наукової проблематики у психології та як поняття інтегративного типу. Розвиток проаналізовано як категорію, явище і проблему психології розвитку в різних аспектах аналізу. Розглянуто місце розвитку в системі споріднених психологічних понять. У статті також аналізуються психологічні аспекти теоретичних та методологічних постнекласичних тенденцій вивчення природи, характеру та визначення психічного розвитку. Постнекласична парадигма та плюралістична методологія пізнання визначають розмитість дисциплінарної мови та врахування ролі соціокультурного контексту при вивченні психологічних явищ. Важливими тенденціями сучасного теоретико-методологічного стану психологічних досліджень розвитку також є визнання неефективності моністичного підходу до його вивчення, взаємозв'язок теоретичних ідей та спроби створення метатеоретичних схем, постнекласичне розуміння розвитку як принципово незавершеного процесу саморуху, актуалізація антропологічного діапазону проблем та посилення спрямованості на роль культурного контексту в дослідженні розвитку людини. The article deals with the modern approaches to the interpretation of the category of development, reveals the theoretical and methodological approaches to study of development in modern psychology, its psychological content, patterns, structure and dynamics. Category of development is viewed as an epicenter of scientific issues in modern psychology and the concept of the integrative type. Category of development is considered as the phenomenon and the problem of developmental psychology in various aspects of the analysis. Analyzed the development site in the related psychological concepts. The article analyzes the psychological aspects of theoretical and methodological postnonclassical contemporary trends in the study of nature, character, and determination of mental development. Postnonclassical paradigm and pluralistic methodology of knowledge determine the disciplinary blurring and increase of the role of the analysis of socio-cultural context in the study of psychological phenomenon. The important tendencies of modern theoretical and methodological state of psychological researches of development are facts of inefficiency of the monistic approach to its study, interconnection of theoretical ideas and attempts of creating metatheoretical schemes, postnonclassical understanding of development as a fundamentally uncompleted process of self-motion, actualization of anthropological range of problems and strengthening of focus on the role of cultural context in research of human development.

Download Full-text

Wastes from coal mining and processing. Methodological approaches to the assessment of their ecological safety and directions for use. Part 2. Methods for the determination of mobile forms of macroand microelements in the wastes of coal mining, processing and combustion

MINING INFORMATIONAL AND ANALYTICAL BULLETIN ◽

10.25018/0236-1493-2020-5-0-5-16 ◽

2020 ◽

Vol 5 ◽

pp. 5-16

Author(s):

S.A. Silyutin ◽

◽

S.A. Epshtein ◽

T.O. Gushchina ◽

◽

...

Keyword(s):

Coal Mining ◽

Ecological Safety ◽

Mobile Forms ◽

Methodological Approaches

Download Full-text

MODIFIKASI MODEL PEMBELAJARAN TEAM ASSISTED INDIVIDUALIZATION DENGAN STRATEGI PEMBELAJARAN TUGAS DAN PAKSA

Prosiding Seminar Nasional Pendidikan KALUNI ◽

10.30998/prokaluni.v2i0.58 ◽

2019 ◽

Vol 2 ◽

Author(s):

Lea Christy Restu Kinasih ◽

Dewi Fatimah ◽

Veranica Julianti

Keyword(s):

Cooperative Learning ◽

Learning Strategies ◽

Learning Process ◽

Learning Model ◽

Learning Models ◽

Classroom Learning ◽

Quality Of Learning ◽

The Given

The selection and determination of appropriate learning strategies can improve the results to be obtained from the application of classroom learning models. This writing aims to discipline students to develop individual abilities of students to be more active in the learning process and improve the quality of learning. The learning process in Indonesia in general only uses conventional learning models that make students passive and undeveloped. In order for the quality of learning to increase, the Team Assisted Individualization learning model is combined with the task learning and forced strategies. The Team Assisted Individualization cooperative learning model is one of the cooperative learning models that combines learning individually and in groups. Meanwhile, task and forced learning strategies are strategies that focus on giving assignments that require students to complete them on time so that the learning process can run effectively. Students are required to do assignments according to the given deadline. This makes students become familiar with the tasks given by the teacher. Combining or modifying the learning model of the assisted individualization team with forced and forced learning strategies is expected to be able to make students more active, disciplined, independent, creative in learning and responsible for the tasks assigned. Therefore this method of incorporation is very necessary in the learning process and can be applied to improve the quality of learning in schools.

Download Full-text

MANUFACTURE INVESTIGATION OF CARTRIDGE WITH BOTTOM-MOST PART FLANGE BY DIRECT EXTRUSION WITH COUNTERPUNCH. REPORT 13. DETERMINATION OF DEFORMED STATE UNDER STRAITENED EXTRUSION IN FOURTH CENTRAL AREA OF PLASTIC DEFORMATION

Technology of metals ◽

10.31044/1684-2499-2020-0-4-43-51 ◽

2020 ◽

Vol 0 (4) ◽

pp. 43-51

Author(s):

A. L. Vorontsov ◽

◽

I. A. Nikiforov ◽

Keyword(s):

Plastic Deformation ◽

Plastic Flow ◽

Central Area ◽

Direct Extrusion ◽

Deformed State ◽

Cumulative Deformation ◽

The Given ◽

General Method

Formulae have been obtained that are necessary to calculate cumulative deformation in the process of straitened extrusion in the central area closed to the working end of the counterpunch. The general method of plastic flow proposed by A. L. Vorontsov was used. The obtained formulae allow one to determine the deformed state of a billet in any point of the given area. The formulae should be used to take into account the strengthening of the extruded material.

Download Full-text

Influence of a chemical preparation of triazole50% cs on sowing the winter wheat against rust

International Journal on Integrated Education ◽

10.31149/ijie.v3i9.626 ◽

2020 ◽

Vol 3 (9) ◽

pp. 231-233

Author(s):

AliyevSh.K. ◽

TuychiyevI.U ◽

Karimov N ◽

Umaraliev.M.I

Keyword(s):

Winter Wheat ◽

Field Experiments ◽

Yellow Rust ◽

Biological Efficiency ◽

Chemical Preparation ◽

Seed Growth ◽

Biological Farming ◽

The Given ◽

Farming Efficiency

The article is focused on the data of the carried works on studying biological efficiency of fungi Triazole 50% on sowing the winter wheat against yellow rust as well as on the height, development and fertility of the wheat. On May 5, 2019 from 9 to 10 o’clock under the temperature 21-23 field experiments of Triazol 50% CS manufactured by the firm “Agroximstar” (Uzbekistan) were carried out on winter wheat as a protector of seeds of winter wheat of Pervitsa sort against the disease of yellow rustin the irrigated conditions in an experimental field of the Institute “Istiklal” of Andijan district of Andijan region. The aim of the given research is to study biological-farming efficiency and determination of optimal norms of preparation expenses and to study the influence of fungicide on the height and development as well as on the fertility of the wheat. The received data showed that the preparation Triazole 50% CS effected on the pathogen of yellow rust favorably and besides that it didn’t effect on seed growth and energy of growth negatively.

Download Full-text