Results 91 to 100 of about 401,503 (306)

Microstructural Evolution and Vacancy Defect Formation in Mn–Mo–Ni RPV Steel Under Low Cycle Fatigue: Insights From EBSD and PALS

Advanced Engineering Materials, EarlyView.
Low‐cycle fatigue damage in Mn–Mo–Ni reactor pressure vessel steel is examined using a combined electron backscatter diffraction and positron annihilation lifetime spectroscopy approach. The study correlates texture evolution, dislocation substructure development, and vacancy‐type defect formation across uniform, necked, and fracture regions, providing
Apu Sarkar, Dhanadeep Dutta, G. Bharat Reddy   +2 more
wiley   +1 more source

A study on the energetic electron precipitation observed by CSES

Earth and Planetary Physics, 2018
High energy particles are the main target of satellite space exploration; particle storm events are closely related to solar activity, cosmic ray distribution, and magnetic storms.
YaLu Wang, XueMin Zhang, XuHui Shen
doaj   +1 more source

Dependence of Energetic Electron Precipitation on the Geomagnetic Index Kp and Electron Energy [PDF]

Journal of Astronomy and Space Sciences, 2013
It has long been known that the magnetospheric particles can precipitate into the atmosphere of the Earth. In this paper we examine such precipitation of energetic electrons using the data obtained from low-altitude polar orbiting satellite ...
Mi-Young Park, Dae-Young Lee, Dae-Kyu Shin, Jung-Hee Cho, Eun-Hee Lee   +4 more
doaj   +1 more source

Multi-wavelength analysis of high energy electrons in solar flares: a case study of August 20, 2002 flare

, 2005
A multi-wavelength spatial and temporal analysis of solar high energy electrons is conducted using the August 20, 2002 flare of an unusually flat (gamma=1.8) hard X-ray spectrum.
A. Asai, A. Czaykowska, A. Klassen, A. Veronig, B. R. Dennis, B. R. Dennis, Brian R. Dennis, Ch. M. Johns, D. Alexander, E. Haug, E. P. Kontar, E. Rieger, Eduard P. Kontar, F. Fárník, G. D. Holman, G. D. Holman, G. J. Hurford, G. Trottet, H. Wang, J. C. Brown, J. C. Brown, J. C. Brown, J. Heyvaerts, Jana Kašparová, L. Fletcher, M. E. Machado, M. J. Aschwanden, M. Karlický, M. Lampton, M. Piana, M. Poquerusse, Marian KarlickÝ, N. Nitta, P. Démoulin, P. Heinzel, P. J. Cargill, R. A. Schwartz, R. C. Alexander, R. C. Canfield, R. C. Puetter, R. P. Lin, R. P. Lin, Richard A. Schwartz, S. G. Benka, T. Bai, T. R. Metcalf, V. N. Melnik, Y. Uchida   +47 more
core   +1 more source

Tribological Performance of 60NiTi Alloy Under Varying Contact Conditions and Elevated Temperatures in Linear Reciprocating Sliding

Advanced Engineering Materials, EarlyView.
This study investigates the tribological response of 60NiTi alloy under dry, water‐lubricated and high‐temperature conditions. The alloy exhibits decreasing wear volume and friction with increasing temperature due to the formation of protective oxide layers. The work clarifies dominant wear mechanisms and demonstrates the suitability of 60NiTi for high‐
Anthony Onyebuchi Okoani, Miguel Angel Selles, Maziar Ramezani   +2 more
wiley   +1 more source

Conjugate high-intensity energetic electron precipitation at high latitude [PDF]

Annales Geophysicae, 2003
On 6 August 1998 an intense precipitation event occurring at high latitude in the evening sector was observed by X-ray and far-ultraviolet imagers on board the Polar satellite and by several ground-based instruments.
T. Christensen, T. Christensen, N. Østgaard, T. J. Rosenberg, D. L. Detrick, G. A. Germany, P. Stauning   +6 more
doaj   +1 more source

Characterization of Nitinol Produced by Laser Powder Bed Fusion for Mechanical Metamaterial Applications

Advanced Engineering Materials, EarlyView.
Stabilization of L‐PBF Ni50.7Ti49.3 under low‐cycle loading was investigated. Recoverable strain after cycling was dependent on the amount of applied load. Recovery ratio was 53.4% and 35.1% at intermediate and high load, respectively. The maximum total strain reached 10.3% at a high load of 1200 MPa.
Ondřej Červinek, Jakub Hurník, Miroslav Šmíd, Ondřej Zobač, Melanie Todt, Daniel Koutný   +5 more
wiley   +1 more source

Inertia of Ionospheric Conductance During Electron Precipitation Events

Geophysical Research Letters
Using the SuperThermal Electron Transport (STET) model coupled with the Super‐thermal Proton Electron Atomic Hydrogen—tRansport in the Ionosphere and Thermosphere (SPEAH‐RIT) codes, we demonstrate that temporal variability of ionospheric conductance is ...
George V. Khazanov, Suk‐Bin Kang, Alex Glocer   +2 more
doaj   +1 more source

Nanoindentation Criteria for Combinatorial Thin Film Libraries

Advanced Engineering Materials, EarlyView.
Thin‐film material libraries are compositional spreads used for screening composition‐structure‐property relationships. Nanoindentation is often used to characterize mechanical behavior across these systems, however variations in methodology are widespread.
Andre Bohn, Adie Alwen, Andrea M. Hodge
wiley   +1 more source

Nanocrystalline semiconductors: synthesis, properties, and perspectives [PDF]

, 2001
The preparation of hollow particles of ZnO by calcination of hydrozincite coated poly(styrene) beads is reported. Synthetic studies have been performed on such polymer/inorganic composite precursors in order to establish the optimum conditions for the ...
O'Brien, P, Pickett, NL, Trindade, T
core   +2 more sources