We investigate radio and X-ray imaging data for two solar ares in order to test the idea that asymmetric precipitation of nonthermal electrons at the two ends of a magnetic loop is consistent with the magnetic mirroring explanation. The events we present were observed in May 1993 by the HXT and SXT X-ray telescopes on the Yohkoh spacecraft, and by the Nobeyama 17 GHz radioheliograph. The hard X...

A microstrip patch antenna is designed that have metallic ring coplanar to radiation patch for gain enhancement is proposed. The design forces conversion of the surface wave energy into the space wave energy by the scattering of surface waves from metallic ring. The metallic ring is placed around the metal patch at a distance of d1 from the edges of the metal patch and width of metallic ring is...

Snowfall signatures over ocean are analyzed using satellite and airborne microwave radiometer measurements at frequencies ranging from 37 to 340 GHz. Data used in the analysis include satellite data from the Advanced Microwave Scanning Radiometer – EOS and the Advanced Microwave Sounding Unit – B, and airborne data from a millimeter-wave radiometer and a dual-frequency precipitation radar durin...

We present results from four recent Chandra monitoring observations of the jet in 3C 273 using the ACIS detector, obtained between November 2003 and July 2004. We find that the X-ray emission comes in two components: unresolved knots that are smaller than the corresponding optically emitting knots and a broad channel that is about the same width as the optical interknot region. We compute the j...

The quasi 2-day wave is known as a strong dynamic perturbation occurring usually after solstice in the middle and upper atmosphere. The excitation mechanism of this transient wave is discussed for years but no clear answe] has been altained. In this paper, propagating characteristics of the 2-day wave are studied based on 8-month temperature measurements from the Microwave Limb Sounde~ (MLS) on...

The arylidienes of spiro thiazolidines (5) containing α,β-unsaturated function have been used as component of Micheal addition with equimolar amount of 2-aminopyridine (6a) to give novel spiro [indole-3,2′-pyrido[1,2-a]thiazolo[5,4-e]pyrimidines] (7) in a single step under microwaves in presence of montmorillonite KSF as solid support. The new improved synthetic method for spiro [indole-3, 2′-t...

A new type of metallic electromagnetic structure has been developed that is characterized by having high surface impedance. The geometry is analogous to a corrugated metal surface in which the corrugations have been folded up into lumped circuit elements, and distributed in a 2-D lattice. Although it is made of continuous metal, and conducts DC currents, it does not conduct AC currents within a...

We use absolutely calibrated data between 3 and 90 GHz from the 2006 balloon flight of the ARCADE 2 instrument, along with previous measurements at other frequencies, to constrain models of extragalactic emission. Such emission is a combination of the cosmic microwave background (CMB) monopole, Galactic foreground emission, the integrated contribution of radio emission from external galaxies, a...

BACKGROUND Cutaneous leishmaniasis caused by L. major is an important public health problem in endemic areas. The aim of this study was to explore the therapeutic effect of microwave and or infrared radiation in the treatment of lesion induced in BALB/c mice by L. major inoculation. METHODS The footpad lesion was induced in BALB/c mice by inoculation of L. major promastigotes subcutaneously. ...

Title of Dissertation: DESIGN AND FABRICATION OF ON CHIP MICROWAVE PULSE POWER DETECTORS Woochul Jeon, Doctor of Philosophy, 2005 Directed By: Professor John Melngailis Department of Electrical and Computer Engineering On-chip microwave pulse-power detectors are promising devices for many electrical systems of both military and commercial applications. Most research in microwave power detector ...