Search the repository

A+ | A- | | SLO | ENG

Keywords: gozdnogospodarsko načrtovanje, gozdnogojitveno načrtovanje, hudourniki, hudourniška območja, usmeritve, priporočila
Published in DiRROS: 10.10.2025; Views: 243; Downloads: 67
Full text (830,81 KB)

Abstract: In recent years, Al metal organic batteries have attracted significant interest due to their promise of sustainability and high volumetric energy densities, while being based on abundant materials. However, many studies assess their performance with insufficient rigor, often emphasizing high capacity and power performance, as well as cycling stability at very high cycling rates. Herein, the feasibility of a highly stable β-ketoenamine-linked anthraquinone-based covalent organic framework (DAAQ-TFP-COF) for rechargeable Al batteries is reassessed. First, the influence of different voltage windows on electrochemical behavior in an ionic liquid electrolyte, identifying an optimal balance between capacity and stability, is investigated. Within the optimized voltage window of 0.5 to 2.0 V, DAAQ-TFP-COF achieves a capacity of 113.9 mAh g−1 at 50 mA g−1. To gain deeper insight into the charge storage mechanism, surface- and bulk-sensitive characterization techniques—energy-dispersive X-ray spectroscopy and X-ray Raman spectroscopy—confirming monovalent AlCl2+ as the main coordination species are employed. Finally, the compatibility of DAAQ-TFP-COF with more cost-effective amide-based Al electrolytes is evaluated. In butyramide-based electrolyte, the organic material exhibits stable performance and high Coulombic efficiency. Based on our findings, a realistic outlook on the key challenges that must be addressed to advance COF-based electrodes for future aluminum battery applications is provided.
Keywords: rechargable batteries, aluminum metal batteries, covalent organic framework
Published in DiRROS: 09.10.2025; Views: 243; Downloads: 107
Full text (1,77 MB)
This document has many files! More...

Abstract: Seagrass meadows are important habitat builders, providing food, shelter, and nursery grounds for many species, alongside essential goods and ecosystem services for humanity. However, in the last decades, seagrass meadows have been subjected to numerous pressures, leading to their widespread decline. The northern Adriatic Sea is no exception, with seagrass regression observed notably between 2014 and 2018. This study aims to identify the drivers of the recent seagrass decline in the Gulf of Trieste through a spatial and temporal assessment of seagrass distribution. To assess the relationship between seagrass dynamics and environmental changes, spatiotemporal patterns of environmental variables were analyzed, and generalized additive models were applied for two different time periods: 2009-2013 and 2014-2018. Historical data on seagrass distribution was also collected and compared with the current distribution. Our findings indicate that Cymodocea nodosa remains the dominant species on the northern coast of the Gulf, with a decrease of 30% in Slovenian waters and up to 89% near Trieste (Italy) during 2014-2018. Analysis of physicochemical variables revealed an increase in seawater temperature across the Gulf and a change in nutrient load, particularly in Slovenia, where it decreased significantly. Models achieved high-performance scores, identifying photosynthetically active radiation, nutrients, temperature, and sediment type as key determinants of seagrass occurrence. Nonetheless, additional local-scale factors likely contributed to lower seagrass’ resilience to disturbances. These findings stress the need to develop integrated spatial planning strategies and provide a crucial baseline for future seagrass monitoring and restoration activities.
Keywords: species distribution, climate change, anthropogenic disturbance, urbanization, Northern Adriatic
Published in DiRROS: 08.10.2025; Views: 276; Downloads: 119
Full text (7,25 MB)
This document has many files! More...

Abstract: Taller timber buildings (TTBs) offer sustainability benefits but pose unique seismic challenges. The following chapter reviews state-of-the-art seismic protection technologies (SPTs) for TTBs, including low-damage self-centering systems, post-tensioned systems, supplemental damping systems, passive and active control systems and base isolation. It discusses the principles, applications, and future challenges of each technology. While significant progress and innovative solutions have been achieved, outstanding challenges include scaling the technology, optimizing cost-effectiveness, and managing interactions between structural and non-structural elements to enhance functional recovery, damage limitation, and acceleration reduction. By examining current practices and future directions, this review facilitates a broader understanding and implementation of SPTs, promoting the sustainable growth of TTBs in seismic-prone regions.
Keywords: timber buildings, earthquake engineering, seismic protection technologies, low-damage and self-centring, post-tensioned systems, supplemental damping systems, passive and active control, base isolation
Published in DiRROS: 08.10.2025; Views: 228; Downloads: 109
Full text (924,55 KB)
This document has many files! More...

Abstract: The fan mussel Pinna nobilis is the largest bivalve species in the Mediterranean Sea and provides numerous ecosystem services. It is classified as critically endangered by IUCN (International Union for Conservation of Nature) due to severe mass mortality events throughout the Mediterranean. The aims of this work are as follows: (i) to assess the current recruitment potential of the species, (ii) to enhance recruitment by keeping juveniles in controlled conditions before releasing them back into the sea, and (iii) to assess the health status of recruits. In the period 2022–2023, larval collectors were set up in the Gulf of Trieste as part of the LIFE Pinna project. The collected individuals were kept in aquaria in two different facilities under different conditions: (a) a closed system with constant water temperature, live phytoplankton, and commercial food and (b) an open system with ambient seawater temperature and commercial food. A clear temporal and spatial variability in recruitment was observed: 13 recruits were found in 2022 and 50 recruits in 2023. The live specimens were between 0.5 and 8 cm in size upon collection and larger in 2023. The growth and survival rate did not differ significantly between the two systems, but the average monthly growth and survival rate were related to the initial size of the juveniles.
Keywords: pen shell, ex situ maintenance, in situ maintenance, Haplosporidium pinnae, Mycobacterium, conservation, marine biology
Published in DiRROS: 08.10.2025; Views: 248; Downloads: 103
Full text (1,71 MB)
This document has many files! More...