Results 111 to 120 of about 132,464 (229)
External Vibrations on Early‐Age Concrete: A Review
Scientific illustration of external vibration, their influencing properties and effects, possible outcomes and measures adapted. ABSTRACT Early‐age concrete exhibits limited mechanical strength, making it highly susceptible to external disturbances such as vibrations from construction activities, traffic, or nearby machinery which can disrupt internal ...
Parvathy Kizhakkiniyedath Mohanan +1 more
wiley +1 more source
Time‐Division Multiplexing for Parallel Transmission at Ultra‐High Field With Limited RF Channels
ABSTRACT Purpose Investigating time‐division multiplexing for parallel transmission in ultra high‐field imaging, striving for homogeneous whole brain excitation with a limited number of RF channels. Methods A fast RF switch was built to alternately route 8 transmit channels to each row of a double‐row 16‐element transmit coil array at a 9.4 T human MRI
Felix Glang +4 more
wiley +1 more source
Active Particles in Tunable Compressible Environments
Gold‐capped active microparticles powered by electric fields plough their way through a matrix of repulsive spheres, shoveling them aside. At high densities and field strengths, an initial strong direction fluctuation may compress the matrix asymmetrically and lead to an asymmetric reaction favoring sustained turns to the same side (spontaneous ...
Venkata Manikantha Sai Ganesh Tanuku +5 more
wiley +1 more source
COMPUTER SIMULATION AS A SUPPORT OF INDEPENDENT WORK OF STUDENTS IN STUDING THEORETICAL PHYSICS
The article reveals advantages of the process of self-study with use of computer didactic means, distinguishes didactic facilities of computer educational programs as to modeling of physical processes on the example of tasks in electrodynamics for self ...
O.A. Konoval, T.I. Turkot
doaj
Drivers of Mid‐Latitude Quiet‐Time Longitude Variations in Ionospheric Density
Abstract The aim of this study is to provide an observational benchmark of mid‐latitude quiet‐time variability in winds, O/N2, and TEC across longitude and local time to provide a foundation for future model–data comparison studies. The quiet‐time ionospheric structure is not uniform but rather exhibits pronounced longitudinal and local‐time ...
K. R. Greer +3 more
wiley +1 more source
Detection of Equatorial Plasma Bubbles Using the COSMIC‐2 Rate of TEC Index
Abstract Equatorial plasma bubbles (EPBs) are large‐scale plasma depletion structures that can disrupt Global Navigation Satellite Systems (GNSS) and other space‐based technologies. Several instruments have been employed to study EPB dynamics, with Total Electron Content (TEC) and Rate of TEC change Index (ROTI) data standing out as valuable parameters
Ana L. Christovam +2 more
wiley +1 more source
Hundres Years of Theory of Relativity
In 2005, all civilised worl will remind the 100 years anniversary of Publishing the original work on special theory of relativity by Albert Einstein. This contribution is a brief review of its principial ideas in the field of electrodynamics.
Jaroslav Franek
doaj
Solar Wind‐Magnetosphere‐Ionosphere Coupling During the October 2024 Storms
Abstract Two geomagnetic storms occurred in October 2024 (Oct 6‐9 and 10–12), driven by the impact of a series of interplanetary coronal mass ejections on the magnetosphere. The first was a moderate storm, with peak Sym‐H near −150 nT, whereas the second was intense, Sym‐H reaching −340 nT.
S. E. Milan +9 more
wiley +1 more source
Multi‐Decadal Trends in the Low Latitude foF2 Driven by Secular Magnetic Variations
Abstract Long‐term ionospheric trends have been widely studied, but their origin and magnitude remain subjects of debate. This study quantifies the linear trend in the F2‐region critical frequency (foF2) and its local time dependence using observations from eight low‐latitude ionosonde stations.
D. Singh +4 more
wiley +1 more source
Magnetic Signatures of a Plasma Wake Behind the Swarm Satellites
Abstract This study provides first observational evidence of a plasma wake behind ESA's Swarm satellites, manifesting itself by a brief magnetic field strength spike and bipolar field variations in transverse direction. These magnetic signatures occur only near the dip‐equator where the magnetic declination is close to zero.
Chao Xiong +3 more
wiley +1 more source

