Results 51 to 60 of about 44,850 (204)
Reference values for respiratory system impedance using impulse oscillometry in healthy preschool children [PDF]
Korean Journal of Pediatrics, 2011 PurposeThe normal values for lung resistance and lung capacity of children, as determined by impulse oscillometry (IOS), are different for children of different ethnicities.
Jye Hae Park +8 more
doaj +1 more source
The origin of fine scale acoustic stratigraphy in deep-sea carbonates [PDF]
, 1979 In this paper we investigate the origin and geologic significance of the closely spaced high-frequency subbottom acoustic reflectors characteristic of pelagic carbonates.
Mayer, Larry A.
core +2 more sources
Impulse Characteristics of Various Soil-Enhancement Material Mixtures
Applied SciencesMany studies have demonstrated that a reduction in ground impedance value occurs under high-impulse current magnitudes, due to the ionisation process in soil.
Fazlul Aman +3 more
doaj +1 more source
Novel small-size directional antenna for UWB WBAN/WPAN applications [PDF]
, 2005 This paper presents a novel small-size directional antenna design for ultrawide-band wireless body area networks/wireless personal area networks applications.
Klemm, M +3 more
core +2 more sources
Impulsive impedances in lossless circuits: Fourierand Laplace methods
Electronics Letters, 2000 A proposal for adding impulsive components of impedance/admittance to the reactance/susceptance for lossless transmission lines is extended to all lossless resonant circuits. This new Fourier analysis yields a finite rate of energy transfer from a lossless source while the orthodox analysis would give an unbounded steady-state energy transfer.
openaire +1 more source
Physical Review Special Topics. Accelerators and Beams, 2008 The transverse turn-by-turn evolution of a bunch slice after an impulse kick is examined considering chromatic and impedance effects. It is found that by fitting the envelope of the beam slice motion to simulated data the strength of the resistive wall ...
V. H. Ranjbar, P. Ivanov
doaj +1 more source
Active-Support Integrated Control Method for Renewable Energy Generation Voltage Source Converters
Frontiers in Energy Research, 2022 Aiming at the grid connection stability of renewable energy generation Voltage Source Converters (VSCs), an active support integrated control strategy is proposed in this article.
Chu Tianfeng +6 more
doaj +1 more source
An optimisation approach to the location and sizing of multiple leaks in a duct [PDF]
, 2006 A single leak in a duct can be located, and its size predicted, by measuring the input impedance of the duct and then solving an inverse problem. However, extending this procedure to a duct containing several leaks is non-trivial, with the resulting ...
Chilekwa, V., Sharp, D.
core
Acoustic modeling using the digital waveguide mesh [PDF]
, 2007 The digital waveguide mesh has been an active area of music acoustics research for over ten years. Although founded in 1-D digital waveguide modeling, the principles on which it is based are not new to researchers grounded in numerical simulation, FDTD ...
Kelloniemi, Antti +3 more
core +2 more sources
Impulse Characteristics of Soil Treated with Enhancement Materials and Various Moisture Contents
Applied SciencesDue to the high mineral contents of additives and enhancement materials (EMs), EMs have become popular in treating soil, which expectedly improves the electrical characteristics of soil.
Usman Muhammad +2 more
doaj +1 more source