Results 151 to 160 of about 7,665,377 (334)
Radio propagation through solar and other extraterrestrial ionized media [PDF]
The present S- and X-band communications needs in deep space are addressed to illustrate the aspects which are affected by propagation through extraterrestrial plasmas. The magnitude, critical threshold, and frequency dependence of some eight propagation
Edelson, R. E., Smith, E. K.
core +1 more source
Advanced Engineering Materials, EarlyView.It is shown that laser ablation pretreatment under oxygen‐free conditions enables copper–aluminium bonding at significantly lower deformation degrees and improved properties compared to mechanical brushing. Laser ablation further increases interface contact area and induces favourable residual stress states and microstructural compatibility ...
Khemais Barienti +11 more
wiley +1 more source
Advanced Engineering Materials, EarlyView.Creep experiments at 900°C on coarse‐grained steel‐ceramic composites containing recycled magnesia reveal that higher ceramic volume fractions significantly enhance the creep resistance. Detailed EBSD investigations identify subgrain formation in the steel matrix as the dominant deformation mechanism.
Moritz Müller +6 more
wiley +1 more source
Multiple Flux Rope Dynamics: MMS Observations and Reconstruction Results
The Astrophysical JournalA series of six ion-scale magnetic flux ropes (FR1–6) and a thin current sheet, encountered by Magnetospheric Multiscale spacecraft in the magnetosheath side of the dayside magnetopause boundary layer, are studied for multiple flux rope dynamics in terms
Wai-Leong Teh
doaj +1 more source
Advanced Engineering Materials, EarlyView.High‐frequency (HF) welding of steel is limited by oxide inclusions that degrade weld quality. This study demonstrates, for the first time, the integration of a nonthermal Ar/H2 dielectric barrier discharge (DBD) plasma jet into HF welding. Local plasma treatment provides effective shielding and in‐situ oxide reduction, resulting in markedly fewer and ...
Viktor Udachin +4 more
wiley +1 more source
Langmuir-wave Excitation in Solar Wind Magnetic Holes
The Astrophysical Journal LettersMagnetic holes (MHs) are structures commonly observed in various space plasma environments throughout the solar system, including the solar wind. These structures are characterized by a localized decrease in magnetic field strength, coincident with an ...
Jingting Liu +10 more
doaj +1 more source
Waves In Space Plasmas (WISP) [PDF]
Waves in space plasmas (WISP) utilizes powerful radio transmitters and sensitive receivers to probe the secrets of the magnetosphere, ionosphere and atmosphere.
Taylor, W. W. L.
core +1 more source
, 2016 Plasmas are ionised gases in which atoms have dissociated into positively charged ions and negatively charged electrons and, to an extent, can move independently from one another. More than 99% of the visible Universe is estimated to be in the plasma state, thus making it the most important of the four fundamental states of matter.
openaire +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
Direct evidence of nonstationary collisionless shocks in space plasmas. [PDF]
Sci Adv, 2019 Dimmock AP +13 more
europepmc +1 more source