Results 51 to 60 of about 450,454 (338)

Anomalous Capacitive Sheath with Deep Radio Frequency Electric Field Penetration [PDF]

open access: yes, 2002
A novel nonlinear effect of anomalously deep penetration of an external radio frequency electric field into a plasma is discribed. A self-consistent kinetic treatment reveals a transition region between the sheath and the plasma.
E. M. Lifshitz   +5 more
core   +3 more sources

Hopfield Neural Networks for Online Constrained Parameter Estimation With Time‐Varying Dynamics and Disturbances

open access: yesInternational Journal of Adaptive Control and Signal Processing, EarlyView.
This paper proposes two projector‐based Hopfield neural network (HNN) estimators for online, constrained parameter estimation under time‐varying data, additive disturbances, and slowly drifting physical parameters. The first is a constraint‐aware HNN that enforces linear equalities and inequalities (via slack neurons) and continuously tracks the ...
Miguel Pedro Silva
wiley   +1 more source

Review Article of Radio Frequency and Microwave Heating Treatment to Disinfest Kutu Beras in Malaysian Rice

open access: yesMATEC Web of Conferences, 2017
This article presents the basic principle of radio frequency (RF) and microwave heating and its application in agricultural sector specifically to control rice insects for storage purpose.
Abdul Nyzam Siti Zulaika   +2 more
doaj   +1 more source

Progress in stellarator research at IPP-Kharkov

open access: yesNukleonika, 2016
A new antenna of ‘crankshaft’ type has been installed in the Uragan-2M device in order to increase the plasma density and heating below the ion cyclotron frequency. Antenna operation is modelled by 1D code, which solves boundary problem for time-harmonic
Moiseenko Vladimir E.   +14 more
doaj   +1 more source

Radar observations of artificial E-region field-aligned irregularities [PDF]

open access: yesAnnales Geophysicae, 2009
Artificial E region field aligned plasma density irregularities (FAIs) were generated using HAARP in four different experimental modes and observed with a coherent scatter radar imager located 450 km to the southwest where it could detect field ...
E. Nossa   +3 more
doaj   +1 more source

Sterilizing Ready-to-Eat Poached Spicy Pork Slices Using a New Device: Combined Radio Frequency Energy and Superheated Water

open access: yesFoods, 2022
In this study, a new device was used to inactivate G. stearothermophilus spores in ready-to-eat (RTE) poached spicy pork slices (PSPS) applying radio frequency (RF) energy (27.12 MHz, 6 kW) and superheated water (SW) simultaneously.
Ke Wang   +7 more
doaj   +1 more source

Comparison of single-phase matrix converter and H-bridge converter for radio frequency induction heating [PDF]

open access: yes, 2007
This paper compares the newly developed single-phase matrix converter and the more conventional H- bridge converter for radio frequency induction heating.
Bingham, Chris   +3 more
core   +1 more source

Enhancing Corrosion Resistance and Mechanical Strength of 3D‐Printed Iron Polylactic Acid for Marine Applications via Laser Surface Texturing

open access: yesAdvanced Engineering Materials, EarlyView.
Laser surface texturing significantly improves the corrosion resistance and mechanical strength of 3D‐printed iron polylactic acid (Ir‐PLA) for marine applications. Optimal laser parameters reduce corrosion by 80% and enhance tensile strength by 25% and ductility by 15%.
Mohammad Rezayat   +6 more
wiley   +1 more source

Developing radio frequency (RF) heating protocol in packed tofu processing by computer simulation

open access: yesCurrent Research in Food Science, 2023
Packed tofu was produced by reheating the mixture of preheated soymilk and coagulant in a sealed container. This study aimed to replace the conventional heating method with RF heating during the reheating of soymilk for packed tofu production.
Baozhong Cui   +9 more
doaj   +1 more source

How to dress radio-frequency photons with tunable momentum

open access: yes, 2018
We demonstrate how the combination of oscillating magnetic forces and radio-frequency (RF) pulses endows RF photons with tunable momentum. We observe velocity-selective spinflip transitions and the associated Doppler shift.
Jamison, Alan O.   +6 more
core   +1 more source

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