http://e.biblio.bru.by/handle/1212121212/26 Sun, 26 Jul 2026 02:17:25 GMT 2026-07-26T02:17:25Z http://e.biblio.bru.by/handle/1212121212/48183 Experimental determination of the total shrinkage strain of reinforced concrete Rzhevutskaya, V. A.; Maskalkova, Y. G.; Ржевуцкая, В. А.; Москалькова, Ю. Г. The article proposes a method for measuring the total shrinkage strain of a reinforced concrete prism in such a way that it is possible to measure the total shrinkage strain on an open surface of the prism no later than three hours after concreting. Furthermore, a monitoring of the strain increase on remaining surfaces of the prism after removing a formwork for concreting is followed. The object of this study is the shrinkage strain of expanded clay concrete and the strain of longitudinal reinforcement. Based on results of the conducted research, a new method for experimentally determining the total shrinkage strain of reinforced concrete was proposed. The suggested method makes it possible to ensure that the shrinkage strain of concrete begin to be recorded from the first day of concreting and the possibility of implementing the proposed method was experimentally confirmed. Prospects for further research are presented in the article. В статье предложен способ фиксирования полных деформаций усадки железобетонной призмы таким образом, чтобы было обеспечено измерение полных деформаций усадки на открытой грани не позднее, чем через три часа после бетонирования, с последующим контролем прироста деформаций по остальным граням призмы после ее распалубки. Объектом настоящего исследования являются усадочные деформации керамзитобетона и деформации продольной арматуры. По результатам проведенных исследований предложен новый способ экспериментального определения полных деформаций усадки железобетона, позволяющий обеспечить начало фиксирования деформаций усадки бетона, начиная с первых суток, и экспериментально подтверждена возможность реализации предложенного способа. Представлены перспективы дальнейших исследований. Wed, 01 Jan 2025 00:00:00 GMT http://e.biblio.bru.by/handle/1212121212/48183 2025-01-01T00:00:00Z http://e.biblio.bru.by/handle/1212121212/48182 Calculation of geometric parameters of an eccentric transmission with intermediate rolling elements Lustenkov, M. E.; Sofiyev, A. H.; Khalilov, I. A. In this study, the geometric analysis of an eccentric transmission with intermediate rolling elements is performed. The outer surface of the disk is mounted on the drive shaft. The rolling elements interact with the outer surface of the disk, the inner cam profile of the central wheel, and the surfaces of the radial grooves of the driven shaft with eccentricity. The transmission has low material consumption. The transmission provides transmission ratios in the range of 6...60 in a single stage. The design does not have an additional mechanism for transmitting rotation from the satellite to the driven shaft. The motion trajectories of the centers of mass of rolling elements are obtained. The trajectory equations are the equations of the center curves of the cam profile of the center wheel. An algorithm for calculating the main geometric parameters of transmissions is developed. Experimental samples of reducers based on eccentric transmission are created. Wed, 01 Jan 2025 00:00:00 GMT http://e.biblio.bru.by/handle/1212121212/48182 2025-01-01T00:00:00Z http://e.biblio.bru.by/handle/1212121212/45346 Simulation modeling and improvement of the winding drum cooling conditions Buzauova, T.; Amanov, E.; Kaizait, Z.; Mudrakov, V.; Sivachenko, L. At the Kaz-Metiz LLP plant, there has long been a problem of insufficient drums cooling due to the scale formation, which led to the need for frequent production stops to cool them. To solve this problem, simulation modeling of cooling drums with and without scale was carried out to investigate the heat spread over the body. The results of the stationary analysis in the Ansys application showed the heat propagation across the cross-section of the drum and proved that the resulting scale, having a low thermal conductivity, significantly reduces the heat exchange from the drum wall to water, as a result, the surface of the drum is significantly overheated. Subsequently, the improved drum cooling system was implemented in «Kaz-Metiz» LLP. Mon, 01 Jan 2024 00:00:00 GMT http://e.biblio.bru.by/handle/1212121212/45346 2024-01-01T00:00:00Z http://e.biblio.bru.by/handle/1212121212/45336 Современные тенденции и направления развития научной коммуникации Дуктова, Л. Г.; Шарапова, Е. В.; Duktova, L. G.; Sharapova, A. V. В статье рассмотрены два аспекта научной коммуникации. Во-первых, изучается коммуникация по апробации результатов научного исследования и формированию репутационного капитала ученого внутри профессионального сообщества. В числе основных тенденций, влияющих на развитие научной коммуникации, - цифровизация, с которой связано появление и функционирование электронных библиотек, создание профилей ученых в электронных базах данных, использование возможностей искусственного интеллекта для популяризации научного знания, мониторинг развития глобального пространства университетской науки с помощью рейтингов (например, ARWU, THE WUR, QS World University Rankings, Webometrics, Ranking Web of Repositories), рост проектов, связанных с реализацией такого направления корпоративных стратегий компаний, как социальная ответственность (патронирование исследований молодых ученых) и др. Вовторых, изучается научная коммуникация, связанная с популяризацией научных исследований и формированием имиджа ученого для массовой аудитории. Среди основных направлений работы структурного подразделения научной организации (учреждения), связанного с PRдеятельностью, - работа с журналистами, организация, проведение и освещение научных мероприятий, специальных мероприятий, управление коммуникативными ресурсами организации, являющимися источниками информации и площадками для коммуникации в научной коммуникации и др. The article deals with two aspects of scientific communication. First, the communication on approbation of research findings and formation of the scientist’s reputational capital within the professional community is examined. The main trends affecting the development of scientific communication include digitalization, which is associated with the electronic libraries emergence and functioning, the creation of profiles of scientists in electronic databases, the use of artificial intelligence to promote scientific knowledge, monitoring the development of the global space of university science through ratings (e.g., ARWU, THE WUR, QS World University Rankings, Webometrics, Ranking Web of Repositories), an increase in the number of projects related to the implementation of such a direction of corporate strategies of companies as social responsibility (patronizing the research of young scientists), etc. Secondly, science communication related to the popularization of scientific research and the formation of a scientist’s image for mass audiences is investigated. The main directions of work of a structural unit of a scientific organization (institution) related to PR-activities include cooperation with journalists, organization, holding and coverage of scientific events, special events, management of communication resources of organizations as sources of information and communication platforms in scientific communication, etc. Мақола ду ҷанбаи иртиботи илмиро баррасӣ мекунад. Аввалан, иртибот оид ба санҷиши натиҷаҳои тадқиқоти илмӣ ва ташаккули сармояи обрӯии олим дар доираи ҷомеаи касбӣ омӯхта мешавад. Тамоюлҳои асосии ба рушди коммуникатсияи илмӣ таъсиркунанда рақамикунониро дар бар мегиранд, ки бо пайдоиш ва фаъолияти китобхонаҳои электронӣ алоқаманд аст, эҷоди профилҳои олимон дар базаҳои электронии маълумотҳо, истифодаи зеҳни сунъӣ барои оммавӣ кардани донишҳои илмӣ, мониторинги рушди фазои ҷаҳонии илми донишгоҳҳо бо истифода аз рейтингҳо (масалан, ARWU, THE WUR, QS World Webometrics, татбиқи лоиҳаҳои Webometrking Rancht, Reviews аз чунин самтҳои стратегияҳои корпоративии ширкатҳо, ба монанди масъулияти иҷтимоӣ (сарпарастии тадқиқоти олимони ҷавон) ва ғайра мебошад. Дуюм, иртиботи илмӣ омӯхта мешавад, ки бо оммавӣ гардонидани тадқиқоти илмӣ ва ташаккули симои олим барои аудиторияи омма алоқаманд аст. Самтҳои асосии кори воҳиди сохтории ташкилоти (муассисаи) илмӣ, ки ба фаъолияти PR алоқаманданд, аз фаъолият бо рӯзноманигорон, ташкил, баргузор ва инъикоси чорабиниҳои илмӣ, чорабиниҳои махсус, идоракунии захираҳои коммуникатсионии ташкилот, ки манбаи иттилоот ва платформаи иртибот дар иртибототи илмӣ мебошанд ва ғайра иборат аст. Mon, 01 Jan 2024 00:00:00 GMT http://e.biblio.bru.by/handle/1212121212/45336 2024-01-01T00:00:00Z