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Your search keyword '"Halama, M."' showing total 6 results
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6 results on '"Halama, M."'

1. Corrosion challenges towards a sustainable society

Author

Bender, R, Feron, D, Mills, D, Ritter, S, Bäßler, R, Bettge, D, De Graeve, I, Dugstad, A, Grassini, S, Hack, T, Halama, M, Han, Eh, Harder, T, Gareth, H, Kittel, J, Krieg, R, Leygraf, C, Martinelli, Arjan, Mol, A, Neff, D, Nilsson, Jo, Odnevall, I, Paterson, S, Paul, S, Prošek, T, Raupach, M, Revilla, Ir, Ropital, F, Schweigart, H, Szala, E, Terryn, H., Tidblad, J, Virtanen, S, Volovitch, P, Watkinson, D, Wilms, M, Winning, G, Zheludkevich, M, Materials and Chemistry, Electrochemical and Surface Engineering, and Materials and Surface Science & Engineering

Subjects
corrosion costs, corrosion, corrosion protection, preventive strategies, Mechanics of Materials, Mechanical Engineering, Materials Chemistry, Metals and Alloys, Environmental Chemistry, General Medicine, Surfaces, Coatings and Films
Abstract

Materials and corrosion (2022). doi:10.1002/maco.202213140, Published by Wiley-VCH, Weinheim [u.a.]

Published
2022
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2. Corrosion challenges towards a sustainable society

Author

Bender, R., Féron, D., Mills, D., Ritter, S., Bäßler, R., Bettge, D., De Graeve, I., Dugstad, A., Grassini, S., Hack, T., Halama, M., Han, E. -H, Harder, T., Hinds, G., Kittel, J., Krieg, R., Leygraf, Christopher, Martinelli, L., Mol, A., Neff, D., Nilsson, J. -O, Odnevall, Inger, Paterson, S., Paul, S., Prošek, T., Raupach, M., Revilla, R. I., Ropital, F., Schweigart, H., Szala, E., Terryn, H., Tidblad, J., Virtanen, S., Volovitch, P., Watkinson, D., Wilms, M., Winning, G., Zheludkevich, M., Bender, R., Féron, D., Mills, D., Ritter, S., Bäßler, R., Bettge, D., De Graeve, I., Dugstad, A., Grassini, S., Hack, T., Halama, M., Han, E. -H, Harder, T., Hinds, G., Kittel, J., Krieg, R., Leygraf, Christopher, Martinelli, L., Mol, A., Neff, D., Nilsson, J. -O, Odnevall, Inger, Paterson, S., Paul, S., Prošek, T., Raupach, M., Revilla, R. I., Ropital, F., Schweigart, H., Szala, E., Terryn, H., Tidblad, J., Virtanen, S., Volovitch, P., Watkinson, D., Wilms, M., Winning, G., and Zheludkevich, M.

Abstract

A global transition towards more sustainable, affordable and reliable energy systems is being stimulated by the Paris Agreement and the United Nation's 2030 Agenda for Sustainable Development. This poses a challenge for the corrosion industry, as building climate-resilient energy systems and infrastructures brings with it a long-term direction, so as a result the long-term behaviour of structural materials (mainly metals and alloys) becomes a major prospect. With this in mind “Corrosion Challenges Towards a Sustainable Society” presents a series of cases showing the importance of corrosion protection of metals and alloys in the development of energy production to further understand the science of corrosion, and bring the need for research and the consequences of corrosion into public and political focus. This includes emphasis on the limitation of greenhouse gas emissions, on the lifetime of infrastructures, implants, cultural heritage artefacts, and a variety of other topics., QC 20230404

Published
2022
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6. A case study for late Archean and Proterozoic biogeochemical iron- and sulphur cycling in a modern habitat-the Arvadi Spring.

Author

Koeksoy E, Halama M, Hagemann N, Weigold PR, Laufer K, Kleindienst S, Byrne JM, Sundman A, Hanselmann K, Halevy I, Schoenberg R, Konhauser KO, and Kappler A

Subjects
Aerobiosis, Anaerobiosis, DNA, Bacterial chemistry, DNA, Bacterial genetics, DNA, Ribosomal chemistry, DNA, Ribosomal genetics, Natural Springs chemistry, RNA, Ribosomal, 16S genetics, Sequence Analysis, DNA, Switzerland, Biota, Ecosystem, Iron metabolism, Natural Springs microbiology, Sulfur metabolism
Abstract

As a consequence of Earth's surface oxygenation, ocean geochemistry changed from ferruginous (iron(II)-rich) into more complex ferro-euxinic (iron(II)-sulphide-rich) conditions during the Paleoproterozoic. This transition must have had profound implications for the Proterozoic microbial community that existed within the ocean water and bottom sediment; in particular, iron-oxidizing bacteria likely had to compete with emerging sulphur-metabolizers. However, the nature of their coexistence and interaction remains speculative. Here, we present geochemical and microbiological data from the Arvadi Spring in the eastern Swiss Alps, a modern model habitat for ferro-euxinic transition zones in late Archean and Proterozoic oceans during high-oxygen intervals, which enables us to reconstruct the microbial community structure in respective settings for this geological era. The spring water is oxygen-saturated but still contains relatively elevated concentrations of dissolved iron(II) (17.2 ± 2.8 μM) and sulphide (2.5 ± 0.2 μM) with simultaneously high concentrations of sulphate (8.3 ± 0.04 mM). Solids consisting of quartz, calcite, dolomite and iron(III) oxyhydroxide minerals as well as sulphur-containing particles, presumably elemental S 0 , cover the spring sediment. Cultivation-based most probable number counts revealed microaerophilic iron(II)-oxidizers and sulphide-oxidizers to represent the largest fraction of iron- and sulphur-metabolizers in the spring, coexisting with less abundant iron(III)-reducers, sulphate-reducers and phototrophic and nitrate-reducing iron(II)-oxidizers. 16S rRNA gene 454 pyrosequencing showed sulphide-oxidizing Thiothrix species to be the dominating genus, supporting the results from our cultivation-based assessment. Collectively, our results suggest that anaerobic and microaerophilic iron- and sulphur-metabolizers could have coexisted in oxygenated ferro-sulphidic transition zones of late Archean and Proterozoic oceans, where they would have sustained continuous cycling of iron and sulphur compounds., (© 2018 John Wiley & Sons Ltd.)

Published
2018
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