Results 91 to 100 of about 233,826 (182)
Circularly polarised reflectarray with linearly polarised feed
Electronics Letters, 2005 A design procedure for a circularly polarised (CP) reflectarray with linearly polarised feed is presented. It is validated by simulation and experiment results that exhibit the cross-polar level of −20 dB at the designed frequency, and −10 dB in 14% bandwidth. This type of CP reflectarray can be used as a good substitution for those with a CP feed.
Z.H. Wu, W.X. Zhang, Z.G. Liu, W. Shen
openaire +1 more source
Polarised neutron scattering from dynamic polarised nuclei 1972–2022
The European Physical Journal E, 2023 AbstractWith the inauguration of the small-angle instrument D11 of the Institute Laue–Langevin (ILL) in September 1972 neutron scattering revolutionized methods of contrast variation. Very soon D11 was oversubscribed by proposals relying on isotopic substitution of hydrogen isotopes.
openaire +2 more sources
CriminologieLe 11 mars 2020, l'OMS a déclaré la Covid-19 comme une pandémie mondiale, impactant tous les secteurs de la société. La pandémie a entraîné des comportements sociaux négatifs et des relations tendues, incluant stigmatisation et discrimination.
Julie Tihon, Fabienne Glowacz
doaj +1 more source
A surprising method for polarising antiprotons
, 2007 We propose a method for polarising antiprotons in a storage ring by means of a polarised positron beam moving parallel to the antiprotons. If the relative velocity is adjusted to $v/c \approx 0.002$ the cross section for spin-flip is as large as about $2
A. Jankowiak +41 more
core +1 more source
Real Convergence and Integration [PDF]
Romanian Journal of European Affairs, 2007 The study is based on the critical observations that competitive market forces alone are not able to assure convergence with the developed countries.
Aurel Iancu
doaj
Polarisation holding in long-length polarising fibres
Electronics Letters, 1985 The polarisation-holding ability of two long-length polarising fibres of different design is examined. Each polarising fibre exhibits a polarisation extinction ratio per unit length comparable to or better than that of the best corresponding polarisation-holding fibre.
openaire +1 more source
The Geography of Employment Polarisation in Britain [PDF]
This paper investigates the regional and subregional patterns of employment polarisation in Great Britain. Extending recent econometric evidence for employment polarisation at the national level, the focus of analysis is to examine the geography of this ...
Ioannis Kaplanis
core
Cogent EngineeringWe present and experimentally demonstrate a seismic ambient noise monitoring optical fibre sensor for early warning detection of sinkholes. The developed optical fibre sensor is designed for warning alert of subsidence and cover collapse sinkholes.
James Jena +4 more
doaj +1 more source
Physico-chemical characterization of Al2O3/Ti6A4V type thermal barrier systems
Revue des Énergies RenouvelablesAl2O3 alumina deposits were deposited on Ti6A4V titanium alloy substrates by rf-PVD at different substrate polarizations 0V, -50V, -100V and without polarization (wp). SEM images, at the surface of the deposits, showed a very good substrate coverage with
Djamel Amari +4 more
doaj +1 more source
This paper examines the effect of income polarisation on individual health. We argue that polarisation captures much better the social tension and conflict that underlie some of the pathways linking income disparities and individual health, and which ...
Blanco Pérez, Cristina, Ramos, Xavi
core