Crowdsourced Doppler measurements of time standard stations demonstrating ionospheric variability

Autor: K. Collins, J. Gibbons, N. Frissell, A. Montare, D. Kazdan, D. Kalmbach, D. Swartz, R. Benedict, V. Romanek, R. Boedicker, W. Liles, W. Engelke, D. G. McGaw, J. Farmer, G. Mikitin, J. Hobart, G. Kavanagh, S. Chakraborty

Publikováno v: Earth System Science Data, Vol 15, Pp 1403-1418 (2023)

Ionospheric variability produces measurable effects in Doppler shift of HF (high-frequency, 3–30 MHz) skywave signals. These effects are straightforward to measure with low-cost equipment and are conducive to citizen science campaigns. The low-cost

Externí odkaz: https://doaj.org/article/e1c5f36c854d47c49ce24ea78c1b9261

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High‐Frequency Communications Response to Solar Activity in September 2017 as Observed by Amateur Radio Networks

Autor: Joshua S. Vega, Ethan S. Miller, Jacob Bortnik, Nathaniel Frissell, W. Engelke, Andrew J. Gerrard, R. Carl Luetzelschwab, Evan Markowitz, Philip J. Erickson

Publikováno v: Space Weather. 17:118-132

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::8b03cb6da7ef7c54bf9e7e8937d19727
https://doi.org/10.1029/2018sw002008

Milk fatty acids estimated by mid-infrared spectroscopy and milk yield can predict methane emissions in dairy cows

Autor: Cornelia C. Metges, Gürbüz Daş, Armin Tuchscherer, Michael Derno, Werner Berg, Stefanie W. Engelke, Björn Kuhla

Publikováno v: Agronomy for Sustainable Development
Agronomy for Sustainable Development, Springer Verlag/EDP Sciences/INRA, 2018, 38 (3), pp.27. ⟨10.1007/s13593-018-0502-x⟩
Agronomy for sustainable development, 38:27

International audience; AbstractRuminant enteric methane emission contributes to global warming. Although breeding low methane-emitting cows appears to be possible through genetic selection, doing so requires methane emission quantification by using

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a9fd0c943998a075e090e82f740a3d67
https://doi.org/10.1007/s13593-018-0502-x

Precise Direction of Symmetrically Tilt Small Angle Boundaries Developed During Recrystallization of Cross Rolled Aluminium

Autor: M. Shamsuzzoha, W. Engelke, Sameer B. Mulani

Publikováno v: Proceedings of the 6th International Conference on Recrystallization and Grain Growth (ReX&GG 2016) ISBN: 9783319486260

A 6°and 3° [001] symmetrical tilt small angle grain boundaries in Al obtained by cross rolling and annealing have been investigated by High Resolution Electron Microscopy (HREM) and Molecular Dynamic Simulation (MDS) techniques. Both HREM and simul

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a65bcebe55d9812e76135cff6db8c4a8
https://doi.org/10.1002/9781119328827.ch32