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We are pleased to present the new VILNIUS TECH electronic publication „Vilnius: nuo laukinių miškų iki Rojaus sodo“ („Vilnius: From Wild Forests to the Garden of Eden“), edited by Associate Professor Giedrė Ingrida Laukaitytė-Malžinskienė of the Department of Urban Design. The publication showcases the outcomes of the autumn semester project carried out by third-year students in the Landscape Architecture programme at the VILNIUS TECH Faculty of Architecture. The project comprises a comprehensive analysis of a historic area of Vilnius and its surrounding context, the development of a territorial strategy, and individual proposals for the preservation and future use of the site. “The title of the project – Vilnius: From Wild Forests to the Garden of Eden – reflects the clear conceptual framework that guided our analytical work. We explored the notion of wildness in Vilnius in relation to the city’s spiritual and cultural development. As future landscape architects, we examined how natural landscape elements, urban transformation, and political processes have shaped the evolution of Vilnius’s cultural landscape. Saviour’s Hill, the Garden of Eden, Rojaus Street, Blind Alley, Schwarz Tavern, the School for Noble Girls, K. Brzostowski’s golden heart, mysterious wells, the communities of the Jesuits, Missionaries, and Visitandine Order, the 1863 Uprising, Russification, Sovietisation, and other historical factors have all influenced the territory we investigated. The study area is located between Rasų, Subačiaus, Vitebsko, and Drujos streets. It includes the present-day grounds of the Visitandine Monastery and Church, the adjacent hospice, the grounds of the American School (occupying the site of former historic gardens), Vilnius Correctional Facility (also located within the former historic gardens), and the historical territory of the former Garden of Eden, which currently remains open and undeveloped. Each student develops and presents an individual interpretation of their own ‘Paradise’, while the collective outcome of the group project lies in identifying the historical constants of the site and revealing the strengths and future potential of this currently underused territory. The project involved analysing the historical development of the site, changes in topography, and vegetation patterns. Drawing on historical maps, texts, and works of art, we traced the relationships between historic buildings and former gardens, documented both surviving and lost heritage elements, explored patterns of life across different historical periods, and examined visual connections, compositional axes, existing and former urban structures, as well as concepts of ecclesiastical heritage — all of which are presented in this publication,” writes Associate Professor Giedrė I. Laukaitytė-Malžinskienė in the introductory section of the publication. Electronic book (in Lithuanian)  >>>  

VILNIUS TECH Library invites you to follow the published new dissertations. The dissertation „Research and application of biofiltration materials in the purification of biogas from hydrogen sulfide“ prepared at VILNIUS TECH by Kamyab Mohammadi. The dissertation was prepared in 2022–2026. Scientific consultant – Assoc. Prof. Dr Rasa Vaiškūnaitė. The dissertation was defended at the public meeting of the Dissertation Defense Council of the Scientific Field of Environmental Engineering in the Aula Doctoralis Meeting Hall of Vilnius Gediminas Technical University at 10 a.m. on 15 June 2026. This dissertation analyzes the removal of hydrogen sulfide (H₂S) from biogas via biofiltration. The study addresses one of the major challenges in biogas utilization, effective H₂S removal, since this compound is toxic and corrosive, and significantly reduces the operational efficiency and service life of biogas energy systems. The main object of the research is biofiltration materials intended for hydrogen sulfide removal from biogas: biochar produced from sewage sludge, cellular lightweight concrete (CLC) waste, and polyurethane foam (PUF). The doctoral dissertation aims to increase the efficiency of hydrogen sulfide removal from biogas and to enhance the operational stability of the biofilter by applying physically and chemically modified as well as unmodified waste-derived materials within the biofiltration process. The dissertation consists of an introduction, a literature review, chapters on methodology and results, general conclusions and recommendations, and lists of references and the author’s publications related to the dissertation topic. The Introduction presents the research problem and its relevance, describes the research object, formulates the aim and objectives, outlines the research methodology, scientific novelty, and practical significance of the results, and states the defended propositions. The First Chapter reviews biotechnologies for hydrogen sulfide removal from biogas, with particular emphasis on biofiltration mechanisms, the properties of biofilter packing materials, and the key factors determining process efficiency. The Second Chapter describes the experimental methodologies used to select biofiltration materials, determine their physicochemical and adsorption properties, inoculate and cultivate microorganisms, evaluate hydrogen sulfide removal efficiency, and the mathematically model the biofiltration process. The Third Chapter presents the results of theoretical and experimental investigations of innovative filtration materials, revealing the relationship between their properties and modification with microbial establishment, biofilm formation, and filter performance in hydrogen sulfide removal, and compares experimental results with mathematical modeling outcomes. Eight scientific papers related to the dissertation topic have been published: two in Web of Science-indexed journals with an impact factor, one in a Web of Science-indexed journal without an impact factor, four in other internationally indexed journals, and one in a conference proceedings volume indexed in the Scopus database. Seven presentations on the dissertation topic were given at national and international scientific conferences. Doctoral dissertation readers can search via VILNIUS TECH Virtual Library.  

VILNIUS TECH Library invites you to follow the published new dissertations. The dissertation „Performance investigation of a hybrid car engine fuelled with gasoline and gaseous mixtures“ („Benziną ir dujų mišinius naudojančio hibridinio automobilio variklio efektyvumo tyrimas“) prepared at VILNIUS TECH by Tadas Vipartas. The dissertation was prepared in 2021–2026. Scientific consultant – Prof. Dr Alfredas Rimkus. The dissertation was defended at the public meeting of the Dissertation Defence Council of the Scientific Field of Transport Engineering in the Aula Doctoralis Meeting Hall of Vilnius Gediminas Technical University at 9 a.m. on 12 June 2026. This dissertation investigates the use of alternative fuels (natural gas and hydrogen) to increase the efficiency of a spark-ignition engine. The impact of different fuels and engine control algorithms on the combustion process and on energy and ecological indicators was determined and evaluated by analysing the emerging technological constraints within the context of a power-split (series-parallel) hybrid powertrain. The dissertation presents a review of scientific literature, analysing the directions for internal combustion engine improvement, the properties of gaseous fuels and the challenges of their application, along with the operating principles of automotive hybrid powertrains. Bench tests were conducted to investigate the effect of late intake valve closing timing on an engine operating on natural gas, and the influence of hydrogen additives on the combustion process and knock control. The numerical analysis of the engine’s combustion process was performed using AVL BOOST™ software, while the energy and ecological indicators of the hybrid vehicle were evaluated through experimental research and numerical simulation in the AVL CRUISE™ software. The following main results were obtained in the dissertation: retarding the intake valve closing timing increased the brake thermal efficiency and NOx emissions while reducing carbon dioxide emissions when the engine operates on natural gas. It was determined that a hydrogen additive in the fuel improves the engine’s energy indicators, but increases nitrogen oxides emissions and the risk of engine knock. Engine knock is effectively managed by retarding the ignition advance angle. Numerical simulation results confirmed that these trends persist during the Worldwide Harmonized Light-duty Vehicles Test Cycle: the use of hydrogen reduces fuel consumption and carbon dioxide emissions, but increases nitrogen oxides emissions. The dissertation results revealed the potential of these technologies and strategies for their application. The obtained data can be applied in the development and selection of advanced engine control algorithms and in the formulation of technologically sound environmental standards. Nine scientific articles have been published on the topic of the dissertation: six in scientific journals indexed in the Clarivate Analytics Web of Science database with an impact factor, one in a scientific journal indexed in the Clarivate Analytics Web of Science database without an impact factor, one in conference proceedings indexed in the Clarivate Analytics Web of Science Conference Proceedings Citation Index, and one in peer-reviewed conference proceedings not indexed in international databases. The research results were presented at three scientific conferences in Lithuania and Poland. Doctoral dissertation readers can search via VILNIUS TECH Virtual Library.

VILNIUS TECH Library invites students, academic staff, and researchers to take advantage of the KTU Press eBooks platform, a valuable resource for academic and scholarly literature. The platform provides access to peer-reviewed textbooks, monographs, course materials, and other academic publications across a wide range of disciplines, including technology, engineering, informatics, social sciences, humanities, physical sciences, and related fields. The KTU eBooks platform offers the following features: online reading and downloading of books for offline use; creation of personalized bookshelves; highlighting of text, note-taking, and bookmarking; full-text search within publications; automatic generation of citations and export of bibliographic data; printing of selected sections of publications in accordance with the publisher’s licensing terms. The platform is accessible on various devices, including computers, tablets, and smartphones. Its collection is continuously expanded with newly published KTU Press titles, ensuring convenient access to up-to-date academic and research literature. Access to the platform is available exclusively through the VILNIUS TECH network. Off-campus access is provided via the VPN service. To ensure secure remote access, users must authenticate using two-factor authentication , either through a mobile authentication application or by phone call verification.