Results 101 to 110 of about 40,348 (289)

Anthropogenic Space Weather

, 2017
Anthropogenic effects on the space environment started in the late 19th century and reached their peak in the 1960s when high-altitude nuclear explosions were carried out by the USA and the Soviet Union.
A. Finkbeiner, A. Karinen, A.B. Hassam, A.C. Dickieson, A.C. Durney, A.C. Durney, A.C. Fraser-Smith, A.C. Fraser-Smith, A.C. Fraser-Smith, A.J. Smith, A.J. Zmuda, A.L. Cullington, A.L. Vampola, A.L. Vampola, A.N. Jaynes, A.V. Streltsov, B. Abel, B.H. Mauk, B.J. O’Brien, B.J. O’Brien, B.T. Tsurutani, B.T. Tsurutani, C.A. Kletzing, C.E. McIlwain, C.E. McIlwain, C.G. Park, C.G. Park, C.J. Rodger, C.S. Roberts, D. Carpenter, D.J. Kessler, D.J. Williams, D.L. Carpenter, D.L. Carpenter, D.L. Reasoner, D.M. Chapin, D.N. Baker, D.N. Baker, D.N. Baker, D.P. Miles, G. Haerendel, G. Klawitter, G. Xin, G.F. Pieper, G.F. Pieper, G.F. Pieper, H. Elliot, H. Elliot, H. Klinkrad, H. Maeda, H.A. Bomke, H.A. Bomke, H.C. Koons, J. Leiphart, J. Roquet, J. Wait, J.-A. Sauvaud, J.A. Allen Van, J.A. Allen Van, J.A. Allen Van, J.A. Allen Van, J.A. Allen Van, J.A. Allen Van, J.A. Allen Van, J.A. Allen Van, J.A. Allen Van, J.A. Allen Van, J.A. Lawrie, J.A. Sauvaud, J.B. Harold, J.C. Foster, J.C. Foster, J.F. Fennell, J.F. Fennell, J.F. Gabites, J.L. Green, J.P. Luette, J.S. Mayo, K. Bullough, K. Papadopoulos, K. Rastani, K.A. Zawdie, K.G. McKay, L. Allen, L. Biermann, M. Casaverde, M. Mendillo, M. Mendillo, M. Parrot, M. Parrot, M. Parrot, M. Parrot, M. Walt, M. Walt, M.A. Clilverd, M.B. Cohen, M.F. Larsen, M.J. Starks, M.J. Starks, N. Christofilos, N.C. Christofilos, O. Molchanov, P. Dyal, P. Kulkarni, P.A. Bernhardt, P.A. Bernhardt, P.A. Bernhardt, P.J. Edwards, P.J. Kellogg, P.R. Pisharoty, R. Helliwell, R. Lüst, R. Raghuram, R.A. Helliwell, R.A. Helliwell, R.A. Helliwell, R.A. Helliwell, R.B. Horne, R.C. Baker, R.C. Moore, R.E. Fischell, R.E. Fischell, R.G. D’Arcy, R.J. Danchik, R.L. Heyborne, R.L. Smith, R.R. Meier, R.R. Scarabucci, R.R. Unterberger, S. Breiner, S.A. Colgate, S.B. Mende, S.L. Kahalas, S.M. Krimigis, T. Pedersen, T.F. Bell, T.R. Pedersen, U.S. Inan, U.S. Inan, U.S. Inan, U.S. Inan, U.S. Inan, U.S. Inan, U.S. Inan, V.S. Sonwalkar, V.S. Sonwalkar, W. Rosenzweig, W.J. Karzas, W.K. Berthold, W.L. Brown, W.L. Brown, W.L. Brown, W.L. Imhof, W.N. Hess, W.N. Hess, X. Li, Y. Omura, Y.I. Galperin   +157 more
core   +1 more source

Enhancing Strength and Electrical Conductivity in Al–Zr–Sc Conductor Alloys Through Sn and Sr Microalloying and Two‐Step Aging Treatment

Advanced Engineering Materials, EarlyView.
Trace additions of Sn and Sr combined with a two‐step aging treatment are shown to enhance the microstructure and performance of Al–Zr–Sc conductor alloys. Strength and electrical conductivity increase concurrently through accelerated precipitation of fine Al3(Sc, Zr) precipitates and improved dislocation resistance, offering a cost‐effective pathway ...
Quan Shao, Emad M. Elgallad, Alexandre Maltais, X.‐Grant Chen   +3 more
wiley   +1 more source

Satellite observations of atmospheric variability related to energetic electron precipitation

, 2023
The 28th IUGG General Assembly (IUGG2023) (Berlin 2023)
Salminen, A., Asikainen, T., Mursula, K.
openaire   +2 more sources

Thermodynamic Pathways of Nonequilibrium Solidification in Wire‐Arc Additive Manufacturing Fe‐Based Multicomponent Alloy Structures

Advanced Engineering Materials, EarlyView.
Geometry‐driven thermal behavior in wire‐arc additive manufacturing (WAAM) influences microstructural evolution during nonequilibrium solidification of a chemically complex Fe–Cr–Nb–W–Mo–C nanocomposite system. By comparing different deposits configurations, distinct entropy–cooling rate correlations, segregation, and carbide evolution are revealed ...
Blanca Palacios, Anthony Gonzalez, Aleksander Aleman, Tyler Dolmetsch, Tanaji Paul, Arvind Agarwal   +5 more
wiley   +1 more source

Exploring Outer Radiation Belt Losses From the International Space Station

Geophysical Research Letters
The precipitation of energetic electrons from the outer radiation belt plays a crucial role in regulating their flux dynamics and influencing ionospheric properties.
Xiao‐Jia Zhang, Anton Artemyev, Yuto Katoh, Yikai Hsieh, Vassilis Angelopoulos, Shoji Torii, Ryuho Kataoka, Yosui Akaike, Satoshi Nakahira   +8 more
doaj   +1 more source

The driving mechanisms of particle precipitation during the moderate geomagnetic storm of 7 January 2005 [PDF]

Annales Geophysicae, 2007
The arrival of an interplanetary coronal mass ejection (ICME) triggered a sudden storm commencement (SSC) at ~09:22 UT on the 7 January 2005. The ICME followed a quiet period in the solar wind and interplanetary magnetic field (IMF). We present global
N. Longden, F. Honary, A. J. Kavanagh, J. Manninen   +3 more
doaj   +1 more source

Phenomenological and Physically Based Modeling of Flow Stress and Strengthening Mechanism of Inconel 718

Advanced Engineering Materials, EarlyView.
Nickel‐based alloys are widely used in high‐temperature applications due to their excellent mechanical strength and oxidation resistance. However, properties such as high‐temperature strength and pronounced work‐hardening make them difficult to machine.
Soheil Rooein, Oliver Schenk, Christoph Broeckmann   +2 more
wiley   +1 more source

Sol–Gel Derived Polymer Precursors for Stereolithography of ZrC

Advanced Engineering Materials, EarlyView.
ZrC is a critical material target for extreme temperature conditions. This report describes a protocol for preparing ZrC ceramics via stereolithography and examines the impact of the polymer matrix on carbothermal reduction and mechanical stability of 3D printed ZrC.
Charles J. Rafalko, Evelyn Wang, Michael A. Hickner   +2 more
wiley   +1 more source

Investigation of Thermo‐Chemical Processes in Commercial MgO‐C Refractory Bricks With and Without MgO‐C Recyclate at Elevated Temperatures

Advanced Engineering Materials, EarlyView.
This study investigates thermo‐chemical processes during high‐temperature testing of two commercial MgO‐C brick grades, one containing 47.5 wt.% MgO‐C recyclate. Using ETV, DTA/TG‐MS, XRD, and SEM/EDS/EBSD, mechanisms such as carbothermal reduction of magnesia, impurity incorporation into the secondary MgO surface layer, and calcium‐rich phase ...
Alexander Schramm, Jana Hubálková, Christian Schimpf, Thomas Schemmel, Christos G. Aneziris, Anja Weidner, Horst Biermann   +6 more
wiley   +1 more source

Characterization of a Recyclate‐Based MgO‐Steel Composite As‐Sintered Inert Anode Candidate After Exposure to Cryolite Electrolysis

Advanced Engineering Materials, EarlyView.
Carbon‐free inert anodes are essential for decarbonizing aluminum electrolysis. This study investigates a recyclate‐based MgO‐316L steel composite anode tested under galvanostatic Hall–Héroult conditions in cryolite at 1000°C. Microstructural analysis reveals selective MgO fluorination, spinel and oxide layer formation, electrolyte infiltration, and ...
Serhii Yaroshevskyi, Alexander Adamczyk, Nora Brachhold, Gert Schmidt, Jana Hubálková, R. Gumeniuk, Alexandros Charitos, Christos G. Aneziris   +7 more
wiley   +1 more source