251. GEORIS pavers – small scale demonstration within GEORIS projectMojca Loncnar, Lubica Kriskova, Christos Georgopoulos, Dimitra Skentzou, Anže Tesovnik, Vilma Ducman, 2025, objavljeni znanstveni prispevek na konferenci Povzetek: Technology of alkali activation is an alternative sustainable approach to producing paving paver, where reactive aluminosilicate precursor undergoes a reaction with an alkaline solution to form binded product. The case study presents the functional usability of a technology as part of the Georis project. The construction pavers are composed of over 75% industrial residues, with the majority of the materials sourced from steel slag industry. Laboratory testing of pavers confirmed the promising mechanical properties, demonstrating high compressive and flexural strength, as well as resistance to frost and abrasion. The results support the feasibility of scaling up from lab-scale to pilot manufacturing. The innovative approach in this project was the pilot production process itself, where more than 20 m² of pavers were manufactured and cured in a mobile unit. To assess their real-world performance, a demonstration case was implemented at the SIJ Acroni courtyard, where the pavers were installed to observe their application in a practical setting and to monitor their long-term durability. The valorisation of residues within GEORIS pavers highlights lower CO₂ emissions compared to conventional cement-based pavers and the potential of technology for industrial symbiosis and circular economy initiatives, making it an attractive solution for environmentally conscious industries.
Ključne besede: waste materials, alkali activated material, sustainable approach, slag, pavers
Objavljeno v DiRROS: 07.04.2025; Ogledov: 96; Prenosov: 42
 Celotno besedilo (926,40 KB)
Gradivo ima več datotek! Več... |
252. |
253. Mineral waste into alkali-activated pavementsMajda Pavlin, Kaja Zupančič, Alenka Sešek Pavlin, 2025, objavljeni znanstveni prispevek na konferenci Povzetek: The study highlights the pressing need to recycle mineral waste to mitigate resource depletion and environmental damage. It focuses on creating sustainable pavement slabs through alkali activation, using a variety of waste materials such as bio-ash, local slags and mineral wool. Through extensive testing of different mix designs, the optimal mixture was identified: bio-ash, ladle slag, and metakaolin, activated with sodium silicate. This combination demonstrated good mechanical properties and showed low concentrations of toxic elements in leaching tests, confirming environmental safety. The research also prioritized energy efficiency, with the curing process conducted at room temperature and demolding after just one day. A test field at Termit d.d. was established to assess the practical application and potential for commercial use of these innovative paving materials, aiming to support a circular economy by extending the lifecycle of resources.
Ključne besede: alkali-activation, pavement slabs, mineral waste, recycling
Objavljeno v DiRROS: 07.04.2025; Ogledov: 104; Prenosov: 42
Celotno besedilo (941,95 KB)
Gradivo ima več datotek! Več...
Gradivo je zbirka in zajema 1 gradivo! |
254. |
255. Overview of the impacts of additive production techniques on the environment : production of continuous fibers, direct laser sintering of metals and selective laser sintering techniquesBranka Mušič, Barbara Horvat, 2025, objavljeni znanstveni prispevek na konferenci Povzetek: Additive manufacturing (AM) has experienced significant growth in recent years, emerging as a transformative technology with broad applications across various industries. This review explores the advantages, disadvantages, and environmental impacts of AM, an important area of consideration as this technology continues to gain popularity. By analyzing existing literature, we assess the challenges associated with AM processes, particularly in comparison to traditional manufacturing methods. AM has the greatest potential to contribute to sustainable development by the production of lightweight components and complex industrial products with intricate designs. These products are made with minimal material usage. Consequently, also waste and emissions are reduced, which are significant environmental advantages. Overall, this review highlights the importance of AM as a tool for advancing sustainability in manufacturing and offers valuable insights for Continuous Fiber Fabrication, Direct Metal Laser Sintering, and Selective Laser Sintering techniques to enhance their competitive advantage while reducing their environmental impact.
Ključne besede: additive manufacturing, 3D print, continuous fiber fabrication, direct metal laser sintering, selective laser sintering, AddCircles
Objavljeno v DiRROS: 07.04.2025; Ogledov: 107; Prenosov: 51
Celotno besedilo (376,17 KB)
Gradivo ima več datotek! Več... |
256. Structural integrity evaluation of the DTT plasma facing unit using detailed CFD and thermo-mechanical analysesPatrik Tarfila, Oriol Costa Garrido, Boštjan Končar, Emanuela Martelli, Francesco Giorgetti, Selanna Rocella, 2024, izvirni znanstveni članek Povzetek: A new Divertor Tokamak Test (DTT) facility is currently being built in Italy to investigate different divertor configurations under different plasma scenarios. The divertor and in particular its target, consisting of Plasma Facing Units (PFUs), is exposed to high heat loads due to plasma fluence. In this paper, the structural integrity of the PFU is evaluated for a reference Single Null (SN) divertor configuration under three different plasma scenarios. A comprehensive structural integrity analysis has been carried out in three stages. In the first stage, computational fluid dynamic (CFD) analyses of the divertor’s PFU with a cooling channel were performed at three different heat loads corresponding to three plasma scenarios. The temperature fields calculated by the CFD analyses were then used as input for the second stage, in which thermo-mechanical simulations were performed to predict the stresses and displacements in the PFU. Due to the high local heat loads, high stresses or even yielding are expected in the PFU’s structural components. Therefore, in the third stage, the structural integrity of critical cross-sections has been verified using the Structural Design Criteria for In-vessel Components (SDC-IC). It has been demonstrated that structural components of the PFU are able to withstand the expected loads, although some non-structural components experienced yielding while not exceeding the critical values.
Objavljeno v DiRROS: 07.04.2025; Ogledov: 100; Prenosov: 55
Celotno besedilo (20,82 MB)
Gradivo ima več datotek! Več... |
257. Divertor Tokamak Test facility project : status of design and implementationF. Romanelli, Oriol Costa Garrido, Boštjan Končar, Patrik Tarfila, P. Zumbolo, 2024, izvirni znanstveni članek Povzetek: An overview is presented of the progress since 2021 in the construction and scientific programme preparation of the Divertor Tokamak Test (DTT) facility. Licensing for building construction has been granted at the end of 2021. Licensing for Cat. A radiologic source has been also granted in 2022. The construction of the toroidal field magnet system is progressing. The prototype of the 170 GHz gyrotron has been produced and it is now under test on the FALCON facility. The design of the vacuum vessel, the poloidal field coils and the civil infrastructures has been completed. The shape of the first DTT divertor has been agreed with EUROfusion to test different plasma and exhaust scenarios: single null, double null, X-divertor and negative triangularity plasmas. A detailed research plan is being elaborated with the involvement of the EUROfusion laboratories.
Objavljeno v DiRROS: 07.04.2025; Ogledov: 120; Prenosov: 46
Celotno besedilo (4,94 MB)
Gradivo ima več datotek! Več... |
258. Karakterizacija CAN-ov na osnovi polipropilena graftiranega z glicidil metakrilatom : diplomsko deloKaja Seitl, 2024, diplomsko delo Ključne besede: CAN-i, karakterizacija, zamreževalo, katalizator, TGA, DSC, DMA, FTIR, diplomsko delo
Objavljeno v DiRROS: 07.04.2025; Ogledov: 113; Prenosov: 29
Celotno besedilo (2,97 MB) |
259. |
260. ELIXIR plant sciences community roadmap 2024-2029Sebastian Beier, Kristina Gruden, Cyril Pommier, Stéphanie Sidibe-Bocs, Sarah Dyer, Pedro Miguel Barros, Keywan Hassani-Pak, Bruno Contreras-Moreira, Carissa Bleker, 2025, strokovni članek Povzetek: The ELIXIR Plant Sciences Community is an interdisciplinary group of researchers with diverse backgrounds from computer science to different fields of plant biology. We answer the needs of both bioinformaticians and plant biologists. The Community objective is to develop services supporting the integration and linking of phenotypic, genotypic, omics (e.g. expression, metabolomics, etc.), environmental, and bibliographic data. The underlying scientific use cases encompass fundamental and applied plant sciences, including genetics, system biology and omics approaches, within the broader context of climate change, agroecology, food security, and sustainable agriculture. To meet the current challenges in agriculture, the ELIXIR Community promotes tools, databases, standards, and best practices for plant research while developing joint initiatives such as international projects and events in collaboration with European infrastructures (EMPHASIS, AnaEE-ERIC, Euro-Bioimaging, METROFOOD-RI). The ELIXIR Community also supports the establishment of links to structuring national projects and initiatives such as NFDI in Germany, or the french Agroecology and ICT program. Despite ongoing efforts, challenges remain, such as the continued scattering of plant molecular and cellular data, which hampers efficient data integration and reuse. Additionally, progressing toward a comprehensive agriculture data space is essential to address the interdisciplinary challenges that modern agriculture faces. Strengthening engagement with related research communities, such as those working on plant pathogens, is also a priority to ensure a holistic approach to plant science and agricultural research. Finally the Plant Sciences Community links with other ELIXIR Communities and Focus Groups, in particular to contribute to the objectives and priority of the Biodiversity, Food Security and Pathogens and of the Cellular and Molecular Research scientific priority areas.
Ključne besede: system biology, genotyping, plant
Objavljeno v DiRROS: 04.04.2025; Ogledov: 151; Prenosov: 42
 Povezava na datoteko |
