Zobrazeno 1 - 10
of 45
pro vyhledávání: '"Jan Johannsen"'
Autor:
Jan-Oliver Sass, Paul Henke, Aurica Mitrovic, Markus Weinmann, Daniel Kluess, Jan Johannsen, Marie-Luise Sellin, Ulrich Lembke, Daniel Reimer, Cornelia Lork, Anika Jonitz-Heincke, Rainer Bader
Publikováno v:
Materials, Vol 17, Iss 8, p 1838 (2024)
Aseptic implant loosening after a total joint replacement is partially influenced by material-specific factors when cobalt–chromium alloys are used, including osteolysis induced by wear and corrosion products and stress shielding. Here, we aim to c
Externí odkaz:
https://doaj.org/article/f563b8e9c5c74c618c2ff6c5c54b1889
Autor:
Jan Johannsen, Christian Lauhoff, Melanie Stenzel, Christoph Schnitter, Thomas Niendorf, Markus Weinmann
Publikováno v:
Materials & Design, Vol 233, Iss , Pp 112265- (2023)
The synthesis of spherical titanium/niobium/tantalum (TNT) alloy powders, namely Ti-20Nb-6Ta, Ti-27Nb-6Ta, Ti-35Nb-6Ta, and Ti-22Nb-19Ta (in wt-%) by electrode induction melting gas atomization is reported. The powder materials are characterized in d
Externí odkaz:
https://doaj.org/article/5417790edc224adc9641c461e0873e55
Autor:
Jan-Oliver Sass, Marie-Luise Sellin, Elisa Kauertz, Jan Johannsen, Markus Weinmann, Melanie Stenzel, Marcus Frank, Danny Vogel, Rainer Bader, Anika Jonitz-Heincke
Publikováno v:
Journal of Functional Biomaterials, Vol 15, Iss 2, p 46 (2024)
The additive manufacturing of titanium–niobium–tantalum alloys with nominal chemical compositions Ti–xNb–6Ta (x = 20, 27, 35) by means of laser beam powder bed fusion is reported, and their potential as implant materials is elaborated by mech
Externí odkaz:
https://doaj.org/article/911e0cda1c83424d9b7068179d1415ba
Publikováno v:
Logical Methods in Computer Science, Vol Volume 4, Issue 4 (2008)
Resolution refinements called w-resolution trees with lemmas (WRTL) and with input lemmas (WRTI) are introduced. Dag-like resolution is equivalent to both WRTL and WRTI when there is no regularity condition. For regular proofs, an exponential separat
Externí odkaz:
https://doaj.org/article/9860ff3ed37349baa9af6375e11ececc
Publikováno v:
Theory and Applications of Satisfiability Testing – SAT 2020 ISBN: 9783030518240
SAT
SAT
We give a significantly simplified proof of the exponential separation between regular and general resolution of Alekhnovich et al. (2007) as a consequence of a general theorem lifting proof depth to regular proof length in resolution. This simpler p
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::eb23d0ffee195b30747b6a413f41a529
https://doi.org/10.1007/978-3-030-51825-7_14
https://doi.org/10.1007/978-3-030-51825-7_14
Publikováno v:
The Minerals, Metals & Materials Series ISBN: 9783030362959
Selective laser melting is a powder-bed-fusion process that is applied to different alloys. Thus, it is essential to study what are the different process variables that affect the static, quasi-static, and cyclic mechanical properties. In this contri
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::11f859865f64f05304e6613cc18e479a
https://doi.org/10.1007/978-3-030-36296-6_11
https://doi.org/10.1007/978-3-030-36296-6_11
Autor:
Samuel R. Buss, Jan Johannsen
Publikováno v:
Journal on Satisfiability, Boolean Modeling and Computation. 10:23-35
We discuss the relationship between linear resolution, s-linear resolution and other fragments of resolution, including tree-like resolution, regular resolution and general resolution. We also discuss linear resolution with restarts. We present polyn
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::21c001870fe853ddf1fc5f7ef05b051e
https://doi.org/10.3233/sat190112
https://doi.org/10.3233/sat190112
The influence of cooling rates in selective laser melted AlSi10Mg on fatigue properties is studied. The failure mechanisms during quasistatic and fatigue loading were analyzed using electron microscopy, X-ray computed tomography and ultrasonic fatigu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::62e16cc270f3117ea76f32e62040b6e5
https://publica.fraunhofer.de/handle/publica/259736
https://publica.fraunhofer.de/handle/publica/259736
Publikováno v:
Logic Colloquium '98: Proceedings of the Annual European Summer Meeting of the Association of Symbolic Logic, held in Prague, Czech Republic, August 9–15, 1998
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::88bff789023d3cd376ae288bc7898988
https://doi.org/10.1017/9781316756140.019
https://doi.org/10.1017/9781316756140.019
Publikováno v:
MATEC Web of Conferences, Vol 165, p 02001 (2018)
Aluminum alloys processed through selective laser melting possess unique features of microstructure, defect morphology and mechanical properties. Constitution of fine cellular dendrites results from the high-cooling rate of the melt pool during the c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::584dd382a84826d5daa9d83337420f0a
https://doi.org/10.1051/matecconf/201816502001
https://doi.org/10.1051/matecconf/201816502001