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112. Mineral waste into alkali-activated pavementsMajda Pavlin, Kaja Zupančič, Alenka Sešek Pavlin, 2025, published scientific conference contribution Abstract: 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.
Keywords: alkali-activation, pavement slabs, mineral waste, recycling
Published in DiRROS: 07.04.2025; Views: 72; Downloads: 16
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114. 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, published scientific conference contribution Abstract: 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.
Keywords: additive manufacturing, 3D print, continuous fiber fabrication, direct metal laser sintering, selective laser sintering, AddCircles
Published in DiRROS: 07.04.2025; Views: 77; Downloads: 27
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115. 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, original scientific article Abstract: 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.
Published in DiRROS: 07.04.2025; Views: 51; Downloads: 23
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116. Divertor Tokamak Test facility project : status of design and implementationF. Romanelli, Oriol Costa Garrido, Boštjan Končar, Patrik Tarfila, P. Zumbolo, 2024, original scientific article Abstract: 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.
Published in DiRROS: 07.04.2025; Views: 68; Downloads: 18
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117. Karakterizacija CAN-ov na osnovi polipropilena graftiranega z glicidil metakrilatom : diplomsko deloKaja Seitl, 2024, undergraduate thesis Keywords: CAN-i, karakterizacija, zamreževalo, katalizator, TGA, DSC, DMA, FTIR, diplomsko delo
Published in DiRROS: 07.04.2025; Views: 88; Downloads: 13
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119. ELIXIR plant sciences community roadmap 2024-2029Sebastian Beier, Kristina Gruden, Cyril Pommier, Stéphanie Sidibe-Bocs, Sarah Dyer, Pedro M. Barros, Keywan Hassani-Pak, Bruno Contreras-Moreira, Carissa Bleker, 2025, professional article Abstract: 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.
Keywords: system biology, genotyping, plant
Published in DiRROS: 04.04.2025; Views: 132; Downloads: 36
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120. Relationships between the deep chlorophyll maximum and hydrographic characteristics across the Atlantic, Indian and Pacific oceansMarta Estrada, Mikel Latasa, Ana Maria Cabello, Patricia de la Fuente, Carles Guallar, Patricija Mozetič, 2024, original scientific article Abstract: The Malaspina-2010 circumnavigation expedition on board R/V Hesperides surveyed tropical and subtropical regions of the Atlantic, Indian and Pacific oceans between December 2010 and July 2011. This article examines the relationships between the distribution of chlorophyll a (Chl a), major inorganic nutrients and other hydrographic variables. A deep chlorophyll maximum (DCM) was found at most stations between 60 and 150 m depth; it occurred close to the level of 1% surface photosynthetically active radiation and was associated with the nitracline. There was a negative relationship between total Chl a at surface and the DCM depth, and between Chl a concentration at the DCM and DCM depth. In terms of Chl a concentration, picophytoplankton was the dominant size class at all sampled light intensities (surface, 20% of surface PAR and PAR at DCM), oceans and geoclimatic zones, except at some stations influenced by upwellings or divergences. Within the Chl a concentration ranges found in this study, the proportion of picophytoplankton increased with total Chl a, in contrast with some previous findings. Vertically integrated Chl a was positively correlated with surface Chl a, with similar slopes for the whole data set and for the different oceans and zones. In turn, surface Chl a and sea surface temperature showed a negative correlation for the Indian Ocean and the subtropical zone, a positive correlation for the Atlantic, and non-significant relationships for the remaining oceans and zones.
Keywords: Malaspina 2010, chlorophyll a, nitracline, deep chlorophyll maximum, phytoplankton size fractionation, Atlantic Ocean, Pacific Ocean, Indian Ocean, hydrobiology, marine biology
Published in DiRROS: 04.04.2025; Views: 162; Downloads: 96
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