Results 61 to 70 of about 144,974 (202)

Transmission coefficient and two-fold degenerate discrete spectrum of spin-1 bosons in a double-step potential

open access: yes, 2015
The scattering of spin-1 bosons in a nonminimal vector double-step potential is described in terms of eigenstates of the helicity operator and it is shown that the transmission coefficient is insensitive to the choice of the polarization of the incident ...
de Castro, A. S., de Oliveira, L. P.
core   +1 more source

Transformation plan for differentiated lightning protection of power supply lines in a mountainous oil transmission station

open access: yesYou-qi chuyun, 2022
In order to ensure the reliable operation of oil transmission stations and improve the lightning protection performance of their power supply lines, the lightning accidents occurred to power supply lines in the Anshun Station in the southern mountainous ...
Jian WANG   +6 more
doaj   +1 more source

Waveguide QED: Power Spectra and Correlations of Two Photons Scattered Off Multiple Distant Qubits and a Mirror

open access: yes, 2015
We study two-level systems (2LS) coupled at different points to a one-dimensional waveguide in which one end is open and the other is either open (infinite waveguide) or closed by a mirror (semi-infinite).
Baranger, Harold U., Fang, Yao-Lung L.
core   +1 more source

Leaching of Chromium, Copper, and Arsenic from CCA-Treated Utility Poles

open access: yesApplied and Environmental Soil Science, 2014
Concentrations of Cu, Cr, and As in soils surrounding 26 Douglas Fir Chromated Copper Arsenate (CCA) treated utility poles and in rainwater runoff from a new CCA treated utility pole segment (log) suspended outside in a cylinder were studied.
Cynthia A. Coles   +3 more
doaj   +1 more source

Wideband 1-Bit Bandpass Delta Sigma Modulator Using Elliptic Filter in Noise Transfer Function

open access: yesIEEE Access, 2022
A 1-bit band-pass delta-sigma modulator (BP-DSM), which utilizes oversampling technology, allows a modulated signal to be directly output by using a high-speed 1-bit digital pulse train, thus realizing miniaturization of transmitters.
Takashi Maehata, Noriharu Suematsu
doaj   +1 more source

Scattering and bound states of fermions in a mixed vector-scalar smooth step potential

open access: yes, 2014
The scattering of a fermion in the background of a smooth step potential is considered with a general mixing of vector and scalar Lorentz structures with the scalar coupling stronger than or equal to the vector coupling.
Castilho, W. M., de Castro, A. S.
core   +1 more source

Effect of pole size on preservative penetration and retention in air-dried ugandan grown eucalypt utility poles

open access: yesMaderas: Ciencia y TecnologĂ­a, 2018
Treated wooden utility poles, from trees such as eucalypts, are the most commonly used for telephone and electricity transmission lines in Uganda. In the last decade, however, frequent failure of wooden poles in service has been reported, likely due to ...
Paul Mugabi, James Thembo
doaj  

Magnetic transmission gear finite element simulation with iron pole hysteresis

open access: yesOpen Physics, 2018
Ferromagnetic poles in a magnetic transmission gear require particular attention during their design process. Usually, during the numerical simulation of these devices the effects of hysteresis for loss estimation are neglected and considered only during
Filippini Mattia   +3 more
doaj   +1 more source

Triple-Mode Cavity Bandpass Filter on Doublet With Controllable Transmission Zeros

open access: yesIEEE Access, 2017
On the basis of doublet and its properties, a class of multiple-mode narrow band bandpasss filter is designed and fabricated by simultaneously exploiting the three resonant modes in a single rectangular cavity: TE101, TE011, and TM110 modes.
Zai-Cheng Guo   +6 more
doaj   +1 more source

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