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Traffic networks and wildlife management: economic aspects of wildlife-vehicle collisions in Hungary
No full textThe public road network puts significant pressure on wildlife species. Road-related mortality is among the first causes of death of huntable species as well. In their case, it causes measurable economic damage to the Hungarian game management sector through wildlife-vehicle collisions (WVCs). Our main goal was to analyze temporospatial patterns of roadkills from the perspective of wildlife management and quantify the economic loss of the sector using WVC data from the Hungarian Game Management Database and legally established wildlife management values of huntable species. We found that a total of 318,480 collisions were reported by game management units during the study period. Our investigation found that the highest annual economic damage suffered by the sector was in 2021 with 5.768 million euros between 2000 and 2021. According to our study, the most threatened species are pheasant (Phasianus colhicus), brown hare (Lepus europeaus), and roe deer (Capreolus capreolus), their occurrence in WVCs determines the economic loss of counties. Our investigation found that small or big game-dominant counties suffer significantly less financial damage from WVCs than the ones with mixed populations of the two animal groups. JEL-codes: O13, L92, Q5
Wood-based composites for 3D printing filaments to use in technical applications
No full textIn recent years, additive manufacturing has gained growing importance in industrial, healthcare, and prototype development. FDM (Fused Deposition Modeling) and resin tech-nologies dominate desktop 3D printing, offering diverse materials, including PLA (polylactic acid) and PETG (polyethylene terephthalate glycol). PLA is biodegradable, compostable, and recyclable, while PETG offers higher impact and heat resistance, making it better suited for industrial applications despite being non-biodegradable. The potential of 3D printing extends beyond polymers, with applications in metalworking and mechanical engineering. While wood-containing PLA filaments are available, the use of additive manufacturing in the woodworking industry remains underexplored. This review, complemented by original re-search, seeks to develop proprietary wood-based filaments for additive manufacturing.
Key considerations include material strength, weight, surface quality, hygroscopicity, and dimensional stability. The cost-effectiveness and eco-friendliness of FDM technology make it widely accessible, yet demand persists for stronger, lighter, and sustainable materials. Cur-rent wood-based materials allow for high-quality, aesthetic products, but limited data on wood species, concentration, and particle size distribution presents opportunities for further research to optimize material performance.
In this paper there were also compared some typical wood-based filaments available on market
Withdrawal capacity of Green ash (Fraxinus pennsylvanica Marsh.) and Box elder (Acer negundo L.)
No full textEfforts to curb the spread of invasive species are made worldwide, but the wood mass available of these
species is already significant in certain areas. The properties of these wood species are little or not at all
known, such as those of green ash (Fraxinus pennsylvanica Marsh.) and box elder (Acer negundo L.).
The withdrawal capacity of wood screws of the two wood species examined showed significant
differences, perpendicular to the grain. The tests conducted using chipboard screws showed withdrawal
capacity of green ash to be 1.5 times greater than that of box elder. For the screw and driving depth
applied, the average withdrawal load of green ash and box elder were 3845 N and 2550 N respectively
Apa és fia az erdészeti tudományok szolgálatában – Fekete Lajos és Fekete Zoltán akadémikusok rövid életrajza
No full text„EGY EGÉSZSÉG NAP - ONE HEALTH DAY” KONFERENCIA : ELŐADÁSAINAK ÉS POSZTEREINEK ÖSSZEFOGLALÓI
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A globális minimumadó következményei és megvalósíthatósága a multinacionális vállalatok számára
No full textBewältigungsstrategien eines nachhaltigen Managements von Organisationen innerhalb einer VUCA-Umwelt: Eine systematische Literaturrecherche
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