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Improvement in ellipticity bandwidth with an equilateral triangular shaped microstrip patch antenna is analyzed in this paper. The triangular patch is electromagnetically coupled using two orthogonally oriented bow tie shaped apertures fed by a 3dB 90deg hybrid for dual polarization operation. The radiating triangular patch has an optimized side length of 52.0 mm. The antenna is designed to transmit...
Initial results from the Active Plasma EXperiment North Star experiment are presented. The North Star active experiment included two separate plasma jet injections, both perpendicular to the Earth's magnetic field. The objective of the experiment is to investigate the interaction of high-speed (7-40 km/s) plasma jets with the ionospheric plasma and the coupling to the magnetosphere and lower ionosphere...
A firm diagnosis of visceral leishmaniasis (kala-azar) requires demonstration of the parasite in organ aspirates or tissue biopsy samples. The aim of this prospective study was to assess the diagnostic usefulness of non-invasive testing for antibody to the leishmanial antigen K39 by means of antigen-impregnated nitrocellulose paper strips adapted for use under field conditions. One drop of peripheral...
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