Browsing Наука и Техника by Title
Now showing items 80-99 of 890
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Structural Analysis of the Pelvic Girdle before and аfter Hip Replacement Procedure
(БНТУ, 2018)The paper presents results of a preliminary study on a structural analysis of the pelvic girdle, comparing results for the analysis performed before and after the hip replacement procedure with taking into account changes in the mechanical properties of the articular cartilage of the joint. Basic anatomy and biomechanics of the hip joint is introduced. The mechanical analysis of ...2018-04-11 -
Structural and Design Specifics of Space Grid Systems
(БНТУ, 2017)The aim of the study is to identify main trends in the development of space grid structures. In order to reach the purpose it is necessary to conduct a review of the known structural concepts, nodal connections and specifics of the space grid structures and to make conclusions on feasibility improvement of the considered structural concepts that make it possible to develop new ...2017-11-26 -
Structural Modification of New Formations in Cement Matrix Using Carbon Nanotube Dispersions and Nanosilica
(БНТУ, 2017)Complex nanodispersed systems with multi-walled carbon nanotubes and nanodispersed silica have a significant impact on the processes of hydration, hardening and strength gain of construction composites predetermining their durability. While using a scanning electron microscope with an attachment for X-ray microanalysis and a device for infrared spectral analysis investigations ...2017-04-03 -
Structure Formation and Properties of Concrete Based on Organic Hydraulic Binders
(БНТУ, 2020)The article addresses the issues of structure formation of road composite materials containing hydraulic (рortland cement) and organic (bitumen) binders. It has been determined that organic and hydraulic binders, being thermodynamically incompatible, are capable of interaction and complement each other. Structure formation processes are associated with interphase transition layers ...2020-06-09 -
Study of Proportional Pressure Modulator on the Basis of Electromagnetic-Type Linear Motor
(БНТУ, 2018)The paper deals with a workflow of a proportional pressure modulator equipped with a linear electric motor of electromagnetic type (LEMET). A schematic diagram consisting of a power supply and control system has been constructed to determine the performance of LEMET. The power supply system is a self-contained half-bridge inverter. The converter input is supplied with 12 V DC ...2018-10-11 -
Study of Vertically Oriented Solar Battery by Exposure of Concentrated Solar Radiation
(БНТУ, 2023)Solar power is one of the largest sectors of the global electric and heat power industry. In search of new energy sources, scientists and engineers around the world are increasingly turning their attention to solar batteries, which can be a suitable replacement for non-renewable energy sources. Vertically oriented solar batteries will generate electricity throughout the daylight ...2023-10-20 -
The Analysis of Available Data on Energy Efficiency of Electric Vehicles to be Used for Eco-Driving Project Development
(БНТУ, 2019)The goal of this paper is to analyse the collected data on energy efficiency of electric vehicles from researches done by other authors and also to summarise all the factors affecting it. The majority of data available are obtained through simulations – therefore the emphasis in this paper will be placed on experimentally acquired data. The results of the analysis will be used ...2019-12-06 -
The Influence of Road Adhesion Coefficient on Energy Consumption and Dynamics of Battery Electric Vehicles
(БНТУ, 2024)Currently, in economically developed countries, electric vehicles are considered as a solution to the problematic issue of reducing greenhouse gas emissions from road vehicles. The level of energy consumption is a critical factor in determining the overall performance of an electric vehicle. The article analyzes the influence of tire adhesion coefficient on the energy consumption ...2024-04-12 -
Thermodynamic Approaches in Assessing Quality, Efficiency and Environmental Friendliness of Asphalt Concrete
(БНТУ, 2022)The experience of developed countries shows that the development of the road network and transport infrastructure determines the intensity of economic ties and is one of the most important conditions for the development of the state’s economy. Optimization of the composition and production technology of asphalt concrete mixture – the basis of paved roads, is of great importance, ...2022-12-09 -
Thermodynamic Aspects of Pavement Engineering
(БНТУ, 2022)Scientific and practical calculations on the thermal stability of typical automobile road surface (semi-limited objects) with fluctuations in air temperatures, transitions from positive to negative, with actual heat transfer coefficients, thermal conductivity of components, specific mass isobaric heat capacities, material densities, periods of regular fluctuations are presented. ...2022-02-22 -
Thermodynamic Estimation of the Parameters for the C–H–O–N–Me-Systems as Operating Fluid Simulants for New Processes of Powder Thermal Spraying and Spheroidizing
(БНТУ, 2021)Over the past few years, a group of new processes was developed for high-temperature, including plasma electric arc spraying (at ambient pressure) and spheroidizing of some ceramic and metal powder materials with the use of gaseous hydrocarbons in the heat carriers as well as with feeding of organic additions into a high-temperature jet, in particular, polymeric ones, to control ...2021-10-06 -
Thermodynamic Evaluation of Asphalt Concrete Properties and its Mixing Energy Consumption by Exergy Structure
(БНТУ, 2023)The relevance of solving the problem of energy saving, today, is enhanced by the requirements of an environmental nature, united by the term “green energy”. Solving the problems of climate conservation is inseparable from solving the problem of energy saving. Green, hydrogen energy, about which there has been a powerful and aggressive debate over the past decade, turned out to ...2023-02-08 -
Usage of the Anharmonic Correlated Einstein Model to Define the Expressions of Cumulants and Thermodynamic Parameters in the Cubic Crystals with New Structure Factors
(БНТУ, 2014)Используя потенциально эффективное взаимодействие в ангармонической корреляционной модели Эйнштейна на основании квантовой статистической теории с фононным взаимодействием, были сформулированы выражения, описывающие асимметричные компоненты (кумулянты) и термодинамические параметры, включая вклад ангармонических эффектов и новых структурных параметров кубических кристаллов. ...2014-12-16 -
Validation of an Assistance System for Merging Maneuvers in Highways in Real Driving Conditions
(БНТУ, 2019)In the latest study conducted by the National Highway Traffic Safety Administration in 2018, it was published that human error is still considered the major factor in traffic accidents, 94 %, compared with other causes such as vehicles, environment and unknown critical reasons. Some driving scenarios are especially complex, such as highways merging lanes, where the driver obtains ...2019-12-06 -
Ways to Improve Road Safety Audit in the Republic of Kazakhstan
(БНТУ, 2021)There are two types of internationally recognized engineering approaches to addressing road safety issues – proactive and reactive. Predicted or proactive approach includes prevention of accidents and taking corrective measures before accidents can occur. One example of this approach is road safety audit, which is a relatively new tool in developing countries. The paper has ...2021-02-04 -
Автоматизированная система управления обучением CATS
(БНТУ, 2019)Использование информационных технологий, в частности информационных обучающих систем, увеличивает возможности как преподавателя, так и обучаемого в достижении своих целей в образовательном процессе, учитывая индивидуальные характеристики каждого и предоставляя возможности непрерывного образования. В статье предлагается и рассматривается новая автоматизированная система управления ...2019-08-12 -
Автоматическая локализация номерного знака автомобиля в системе Wolfram Mathematica
(БНТУ, 2022)Современные устройства формирования изображений позволяют решать комплекс технических прикладных задач, требующих синтеза и анализа компьютерных методов обработки с использованием пороговой бинаризации, классификации изображений, кластеризации, с применением машинного обучения для определения областей интереса. Так, алгоритмы сегментации нашли широкое использование в обработке ...2022-11-11 -
Автомобильный транспорт и проблема повышения безопасности дорожного движения
(БНТУ, 2013)Обеспечение и повышение безопасности эксплуатируемых автотранспортных средств имеют важнейшее значение во всем мире. Для автомобильного транспорта Республики Беларусь эта проблема является также актуальной. По результатам эксплуатации транспортных средств республики за 2011 г. проводится анализ абсолютных и относительных показателей аварийности, эксплуатируемого парка транспортных ...2013-12-05 -
Адаптивный задний комбинированный фонарь транспортного средства с несменными источниками света
(БНТУ, 2020)В настоящее время из-за возрастания средней скорости движения транспортных средств для обеспечения их заметности сила света их светотехнического оборудования постоянно увеличивается, что может привести к ослеплению остальных участников дорожного движения, особенно в темное время суток. Однако если не увеличивать силу света фонарей, то транспортное средство не будет заметно в ...2020-08-04 -
Азотный потенциал при ионном азотировании в плазме тлеющего разряда
(БНТУ, 2015)Рассмотрены вопросы регулирования фазового состава азотированного слоя при газовом и ионном азотировании в тлеющем разряде. Установлено, что имеющиеся модели управления структурой азотированного слоя с помощью индекса азотирования (азотного потенциала) не применимы для ионного азотирования в тлеющем разряде. Принципиальным отличием ионного азотирования от газового является то, ...2015-03-11
