Zobrazeno 1 - 10
of 145
pro vyhledávání: '"Frank Niessen"'
Autor:
Defang You, Ruediger Stein, Kirsten Fahl, Maricel C. Williams, Daniela N. Schmidt, Ian Nicholas McCave, Stephen Barker, Enno Schefuß, Lu Niu, Gerhard Kuhn, Frank Niessen
Publikováno v:
Communications Earth & Environment, Vol 4, Iss 1, Pp 1-12 (2023)
Periodic meltwater pulses from the Laurentide-Greenland Ice Sheets during the last deglaciation drove abrupt changes in sea surface temperature and sea ice extent, according to sediment core biomarker proxy records from the Eirik Drift, eastern Labra
Externí odkaz:
https://doaj.org/article/a3fcaf1e30824ce49b3d819cfd283e2a
Publikováno v:
Materials Research Letters, Vol 8, Iss 9, Pp 341-347 (2020)
Nanoscale interphase precipitation in microalloyed ferritic steels provides a remarkable (200–400 MPa) strengthening increment, however its origin is unclear. Scanning transmission electron microscopy revealed step formation at the matrix/precipita
Externí odkaz:
https://doaj.org/article/d776febdcdec4cfebc622dfa2546b85e
Autor:
Ji‐Hoon Kim, Wei‐Li Hong, Marta E. Torres, Jong‐Sik Ryu, Moo‐Hee Kang, Dukki Han, Seung‐Il Nam, Jin Hur, Dong‐Chan Koh, Frank Niessen, Dong‐Hun Lee, Kwangchul Jang, James William Buchanan Rae, Meilian Chen
Publikováno v:
Geochemistry, Geophysics, Geosystems, Vol 22, Iss 8, Pp n/a-n/a (2021)
Abstract The response of Arctic Ocean biogeochemistry to subsurface flow driven by permafrost thaw is poorly understood. We present dissolved chloride and water isotopic data from the Chukchi Sea Shelf sediments that reveal the presence of a meteoric
Externí odkaz:
https://doaj.org/article/6860096e25734091bd3e9a4064c7d606
Publikováno v:
Nature Communications, Vol 8, Iss 1, Pp 1-13 (2017)
Coinciding with global warming, Arctic sea ice has rapidly decreased during the last four decades. Here, using biomarker records, the authors show that permanent sea ice was still present in the central Arctic Ocean during the last interglacial, when
Externí odkaz:
https://doaj.org/article/0cd9b23901c94fbab0d77eb2bb88215c
Autor:
Yara Bachour, MD, Zavira Heinze, MD, Gijs van Selms, MD, Marco Ritt, MD, PhD, Frank Niessen, MD, PhD, Peter Keizers, PhD
Publikováno v:
Plastic and Reconstructive Surgery, Global Open, Vol 7, Iss 1, p e2093 (2019)
Background:. Poly Implant Prothèse (PIP) silicone breast implants were removed from the market between 2010 and 2012 because of the use of nonmedical grade silicone filler. The chemical and physico-chemical properties of PIP implants have been analy
Externí odkaz:
https://doaj.org/article/194114667d5a488fb9458627bf87c313
Autor:
Ruediger Stein, Kirsten Fahl, Michael Schreck, Gregor Knorr, Frank Niessen, Matthias Forwick, Catalina Gebhardt, Laura Jensen, Michael Kaminski, Achim Kopf, Jens Matthiessen, Wilfried Jokat, Gerrit Lohmann
Publikováno v:
Nature Communications, Vol 7, Iss 1, Pp 1-13 (2016)
Despite the importance of Arctic sea-ice in the global climate system, a paucity of pre-Quaternary sedimentary archives limits our understanding of its long-term history. Here, based on ancient sediments revealed by submarine landslides, the authors
Externí odkaz:
https://doaj.org/article/7e2935824eac4ba9ad8a93493d086c4c
Autor:
Renaldo Gastineau, Pierre Sabatier, Stefano C. Fabbri, Flavio S. Anselmetti, Patricia Roeser, Mustafa Şahin, Serkan Gündüz, A. Catalina Gebhardt, Sven O. Franz, Frank Niessen, Julia De Sigoyer
The North Anatolian Fault (NAF), located in Turkey, is one of the world's most active faults and accommodates Anatolia's westward motion relative to Eurasia. Over the last century, several earthquakes (M>6.8) have migrated from east to west. It is in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a928bbe7d0a2a8ac7b7a677bbd6c8902
https://doi.org/10.5194/egusphere-egu23-13935
https://doi.org/10.5194/egusphere-egu23-13935
Autor:
Konstantin V. Werner, Frank Niessen, Wei Li, Song Lu, Levente Vitos, Matteo Villa, Marcel A.J. Somers
Publikováno v:
Werner, K V, Niessen, F, Li, W, Lu, S, Vitos, L, Villa, M & Somers, M A J 2023, ' Reconciling experimental and theoretical stacking fault energies in face-centered cubic materials with the experimental twinning stress ', Materialia, vol. 27, 101708 . https://doi.org/10.1016/j.mtla.2023.101708
Stacking fault energy and twinning stress are thought to be closely correlated. All currently available models predict a monotonous decrease in twinning stress with decreasing stacking fault energy and depart from the assumption that the intrinsic st
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::91c9e6067c6074390f223c7db86e9ada
https://orbit.dtu.dk/en/publications/4f34432a-c1b5-4e78-a9a5-fe54aec81381
https://orbit.dtu.dk/en/publications/4f34432a-c1b5-4e78-a9a5-fe54aec81381
Autor:
Edohamen Awannegbe, Huijun Li, Tingting Song, Frank Niessen, Ma Qian, Azdiar A. Gazder, Mitchel J.B. Nancarrow, Elena Pereloma
Publikováno v:
Awannegbe, E, Li, H, Song, T, Niessen, F, Qian, M, Gazder, A A, Nancarrow, M J B & Pereloma, E 2023, ' Microstructural characterisation and mechanical evaluation of Ti-15Mo manufactured by Laser Metal Deposition ', Journal of Alloys and Compounds, vol. 947, 169553 . https://doi.org/10.1016/j.jallcom.2023.169553
A bidirectional powder deposition strategy was employed to additively manufacture Ti-15Mo wt% using laser metal deposition. Phase identification, elemental analysis and microstructural characterisation were conducted after fabrication and uniaxial te
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::135c19545e9e9664318786fb4659ecc7
https://orbit.dtu.dk/en/publications/56291d37-632c-41db-91de-4eea3b5b3588
https://orbit.dtu.dk/en/publications/56291d37-632c-41db-91de-4eea3b5b3588
Autor:
Frank Niessen, Wei Li, Konstantin V. Werner, Song Lu, Levente Vitos, Matteo Villa, Marcel A.J. Somers
Publikováno v:
Niessen, F, Li, W, Werner, K V, Lu, S, Vitos, L, Villa, M & Somers, M A J 2023, ' Ab initio study of the effect of interstitial alloying on the intrinsic stacking fault energy of paramagnetic γ-Fe and austenitic stainless steel ', Acta Materialia, vol. 253, 118967 . https://doi.org/10.1016/j.actamat.2023.118967
Intrinsic stacking fault energy (SFE) values of γ-Fe and AISI 304 austenitic stainless steels were determined as a function of carbon and nitrogen content using ab initio calculations. In contrast to previous investigations, the analysis was conduct