Results 101 to 110 of about 28,514 (260)

Towards the azimuthal characteristics of ionospheric and seismic effects of "Chelyabinsk" meteorite fall according to the data from coherent radar, GPS and seismic networks

, 2015
We present the results of a study of the azimuthal characteristics of ionospheric and seismic effects of the meteorite 'Chelyabinsk', based on the data from the network of GPS receivers, coherent decameter radar EKB SuperDARN and network of seismic ...
Bakhtiyarov, V. F., Berngardt, O. I., Dobrynina, A. A., Kusonsky, O. A., Kutelev, K. A., Perevalova, N. P., Shestakov, N. V., Zagretdinov, R. V., Zherebtsov, G. A.   +8 more
core   +1 more source

Faraday–Ramsey Rotation in Ultrathin Alkali Vapor Cells as an Analogy to Atomic‐Beam Systems

Laser &Photonics Reviews, EarlyView.
This work demonstrates that ultrathin rubidium vapor cells can emulate atomic‐beam behavior through geometry‐dependent velocity filtering. Employing a spatially separated pump–probe scheme and Faraday–Ramsey rotation, the study reveals coherent atomic dynamics without buffer gas or anti‐relaxation coatings. This approach offers a compact pathway toward
Mark Dikopoltsev, Eliran Talker, Yefim Barash, Noa Mazurski, Uriel Levy   +4 more
wiley   +1 more source

Numerical simulation and machine learning framework approach for ballistic performance evaluation of aluminium structures

Results in Engineering
Understanding and accurately predicting the ballistic response behavior of structural materials is critical for the design and optimization of lightweight, high performance protective structures subjected to high velocity impact.
Tota Rakesh Kumar, Bodduru Kamesh, Jayant Giri, Mohammad Kanan, Dora Nagaraju, Javed Syed   +5 more
doaj   +1 more source

Ionized Gas in Damped Lyman Alpha Protogalaxies: II. Comparison Between Models and the Kinematic Data

, 2000
We test semi-analytic models for galaxy formation with accurate kinematic data of damped Lyman alpha protogalaxies (DLAs) presented in the companion paper I.
Kauffmann G., Lu L., Rees M. J.
core   +1 more source

A Stopped‐Flow Instrument for Millisecond Timescale Reaction Monitoring on a Standard NMR Spectrometer

Magnetic Resonance in Chemistry, EarlyView.
A new stopped‐flow instrument allows kinetic measurements of reactions 10 milliseconds after initiating them by mixing in a flow cell inserted into a standard NMR probe and spectrometer. High‐speed video, pressure and NMR line‐shape data are used to characterise mixing and stopping, and a protodeboronation reaction with a 5‐millisecond half‐life used ...
Andrew M. R. Hall, Edward J. King, Lloyd A. L. Mitchell, George A. Steedman, Stuart Johnstone, Clark Landis, Guy C. Lloyd‐Jones   +6 more
wiley   +1 more source

Static and Dynamic Mechanical Properties and Ballistic Behavior of 6061 Aluminum Alloy

Gaoya wuli xuebao
Aluminum alloys are widely used in aerospace, shipbuilding and high-tech fields due to their excellent mechanical properties. However, they often suffer dynamic impact loading during service.
Zhijian FENG, Menglei HU, Xuefeng ZHANG
doaj   +1 more source

A coalescence model for freely decaying two-dimensional turbulence

, 1998
We propose a ballistic coalescence model (punctuated-Hamiltonian approach) mimicking the fusion of vortices in freely decaying two-dimensional turbulence. A temporal scaling behaviour is reached where the vortex density evolves like $t^{-\xi}$.
Batchelor G. K., E Trizac, Hansen A. E., Huber G., Kirchoff G. in, Marteau D., Pomeau Y., Sire C., Sommeria J., Sommeria J., Trizac E.   +10 more
core   +1 more source

Kinetic Compensation of Barrel Launch Under High‐Speed Solid‐Phase Particulate Impacts

International Journal of Mechanical System Dynamics, EarlyView.
ABSTRACT An accurate launch‐dynamics computational method is critical for barrel weapon service life assessment and multiphase physics field refinement. Given the lack of studies on the solid‐phase buildup behavior at the projectile base, this paper provides an improved method for calculating the launching dynamics under high pressure and high speed ...
Zhiyi He, Guolai Yang, Quanzhao Sun, Shuli Li   +3 more
wiley   +1 more source

The impact of the coupling relationship between projectile size and yarn dimension on the ballistic performance of plain weave fabric

Defence Technology
Aramid fibers, due to their relatively high inter-yarn friction, high strength, high modulus, and other characteristics, have become a typical representative of flexible anti-ballistic materials in modern warfare. Current research on the anti-penetration
Kaiying Wang, Xuan Zhou, Wenke Ren, Yiding Wu, Yilei Yu, Yi Zhou, Lizhi Xu, Guangfa Gao   +7 more
doaj   +1 more source

Ballistic Bunching of Photo-Injected Electron Bunches with Dielectric-Lined Waveguide

, 2014
We describe a simple technique to passively bunch non-ultrarelativistics ($\lesssim 10$~MeV) electron bunches produced in conventional photoinjectors. The scheme employs a dielectric-lined waveguide located downstream of the electron source to impress an
Lemery, F., Piot, P.
core   +2 more sources