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1654. Tuning the long-term corrosion behaviour of biodegradable WE43 magnesium alloy by PEO coatingJulia Nachtsheim, Songyun Ma, Jaka Burja, Barbara Šetina, Bernd Markert, 2023, izvirni znanstveni članek Ključne besede: long-term degradation, in vitro corrosion mechanisms: biodegradable, magnesium, DMEM fluid, hydrogen evolution, PEO coating Objavljeno v DiRROS: 20.05.2024; Ogledov: 399; Prenosov: 188 Povezava na datoteko |
1655. Effect of microalloying on tempering of Mo-W high thermal conductivity steelJaka Burja, Aleš Nagode, Jože Medved, Tilen Balaško, Klemen Grabnar, 2023, izvirni znanstveni članek Ključne besede: hot work tool steel, microalloying, močybdenum, tungsten, tempering, heat treatment Objavljeno v DiRROS: 20.05.2024; Ogledov: 393; Prenosov: 185 Povezava na datoteko |
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1658. Too hot to handle : effects of water temperature on the early life stages of Gongolaria barbata (Fucales)Ana Lokovšek, Valentina Pitacco, Annalisa Falace, Domen Trkov, Martina Orlando-Bonaca, 2024, izvirni znanstveni članek Povzetek: Gongolaria barbata plays a crucial role as a habitat-forming Fucales species in the Mediterranean Sea, thriving in shallow, sheltered coastal regions, where it exhibits optimal growth in a temperature range of 10 to 25 °C. In the northern Adriatic Sea, a semi-enclosed part of the Mediterranean, there has been a remarkable increase in seawater temperatures in recent decades, often exceeding 28 °C in summer. These high temperatures pose a significant threat to the vulnerable early life stages of G. barbata. This study delves into the effects of four temperatures (15, 18, 24, and 28 °C) on the growth of G. barbata over its first 16 days, closely monitoring mortality, deformities, and overall survival. Our experiments reveal that higher temperatures can result in deformities and increased mortality of germlings. Notably, a temperature of 28 °C resulted in the death of all germlings within the first week, whereas those exposed to 24 °C survived until the second week, albeit with significant deformities prior to death. In contrast, germlings cultivated at 15 and 18 °C exhibited normal development with minimal deformities. These results highlight the susceptibility of the early life stages of G. barbata to temperature-induced stress and provide valuable insights into the potential consequences of rising seawater temperatures in the Mediterranean. Ključne besede: sea temperature, early stages of growth, deformations, macroalgae, climate change, Mediterranean Sea Objavljeno v DiRROS: 17.05.2024; Ogledov: 465; Prenosov: 434 Celotno besedilo (2,43 MB) Gradivo ima več datotek! Več... |
1659. Microstructure and properties of an AZ61 alloy after extrusion with a forward-backward oscillating die without preheating of the initial billetAnna Dobkowska, Aleksandra Zielińska, Irena Paulin, Črtomir Donik, Maciej Łojkowski, Milena Koralnik, Bogusława Adamczyk-Cieślak, Krystian Paradowski, Marek Tkocz, Dariusz Kuc, Jiří Kubásek, Matjaž Godec, Wojciech Święszkowski, 2023, izvirni znanstveni članek Ključne besede: magnesium alloys, severe plastic deformation, microstructure, mechanical properties, corrosion, extrusion, high deformation ratio Objavljeno v DiRROS: 17.05.2024; Ogledov: 481; Prenosov: 252 Povezava na datoteko |
1660. Two new species of Elaphoidella (Copepoda, Harpacticoida) from subterranean waters in Northeast Thailand, with a record of a gynandromorphic specimen and an up-to-date key to Elaphoidella species from Southeast AsiaChaichat Boonyanusith, Anton Brancelj, La-orsri Sanoamuang, 2024, izvirni znanstveni članek Povzetek: Two new species of copepods of the genus Elaphoidella Chappuis, 1929 were discovered in a cave and a spring in northeastern Thailand. The first species, E. phuphamanensis sp. nov., belongs to species-group VII sensu Lang. It is most similar to E. turgisetosa Petkovski, 1980 in the armament of the male third exopod of the fourth swimming leg and the shape and armament of the fifth swimming leg in both sexes. However, it is easily distinguished from other congeners by the segmentation of the first swimming leg, the endopod of the fourth swimming leg, and the armature of the third exopod of swimming legs 2–4 in both sexes. The second species, E. propecabezasi sp. nov., is located in species-group I sensu Lang, where the male does not have a transformed seta on the third exopod of the fourth swimming leg and the female fifth swimming leg has four baseoendopodal robust setae, unequal in length. It is most similar to E. cabezasi Petkovski, 1982 and E. paraaffinis Watiroyram, Sanoamuang and Brancelj, 2017 in having the same armature formula as endopods 1–2 of female swimming legs 1–4. However, the ornamentation of the anal operculum, the shape of the caudal ramus, and the armature of the fifth swimming leg in both sexes distinguish them from each other. A rare gynandromorphic specimen of E. propecabezasi sp. nov. was recorded, and a revised key to Elaphoidella species in Southeast Asia is provided. Ključne besede: cave-dwelling copepods, endemic distribution, groundwater habitats, intersex, morphology, zoology, Southeast Asia Objavljeno v DiRROS: 17.05.2024; Ogledov: 403; Prenosov: 495 Celotno besedilo (9,81 MB) Gradivo ima več datotek! Več... |