We report evidence that the gas properties of X-ray groups containing radio galaxies differ from those of radio-quiet groups. For a well-studied sample of ROSAT-observed groups, we found that more than half of the elliptical-dominated groups can be considered “radio-loud”, and that radio-loud groups are likely to be hotter at a given X-ray luminosity than radio-quiet groups. We tested three dif...

We present radio and X-ray observations of an impulsive solar flare that was moderately intense in microwaves, yet showed very meager EUV and Xray emission. The flare occurred on 2001 Oct 24 and was well-observed at radio wavelengths by the Nobeyama Radioheliograph (NoRH), the Nobeyama Radio Polarimeters (NoRP), and by the Owens Valley Solar Array (OVSA). It was also observed in EUV and X-ray w...

A spatiotemporal study of neutral gas temperature during the first 100 s of operation for a radio-frequency electrothermal plasma micro-thruster operating on nitrogen at 60 W and 1.5 Torr is performed to identify the heating mechanisms involved. Neutral gas temperature is estimated from rovibrational band fitting of the nitrogen second positive system. A set of baffles are used to restrict the ...

Heat treatments have been suggested as alternatives to chemical fumigants for control of postharvest insects in dried fruits and nuts. Conventional forced hot air treatments heat product too slowly to be practical, but radio frequency treatments are capable of more rapid product heating. While developing radio frequency heat treatments for dried fruits and nuts, the heat tolerance of nondiapaus...

In the past few years, radio frequency (RF) devices, which are usually used in the vicinity of a human body, are increasing. The health effects of the electromagnetic (EM) waves from RF devices on the human body are dependent on the frequency and strength of the waves. The absorbed RF EM energy mainly contributes to tissue heating. The specific absorption rate (SAR) has been used as the standar...

We present recent advances in quarantine and pre-shipment alternatives: phosphine and methyl bromide recapture for empty ship holds; radio frequency heating in walnuts; low oxygen followed by low oxygen, cold or virus treatment to disinfest dried fruits and nuts; controlled atmosphere temperature treatment system (CATTS) for fresh fruit.

We have investigated motional heating of laser-cooled Be ions held in radio-frequency ~Paul! traps. We have measured heating rates in a variety of traps with different geometries, electrode materials, and characteristic sizes. The results show that heating is due to electric-field noise from the trap electrodes that exerts a stochastic fluctuating force on the ion. The scaling of the heating ra...

Basic Principles of Magnetic Resonance Imaging Magnetic Field Problems Implanted Objects Propelled Objects Noise Radio Frequency Heating Occupational Exposure Monitor Interference Monitors and Equipment Electrocardiography Pulse Oximetry and Peripheral Perfusion Blood Pressure Anesthesia Machines Respiratory Gas Analysis Intravenous Infusion Pumps Specialized Equipment Patient Problems Patient ...