We have used the Australia Telescope Compact Array (ATCA) to make a sensitive (5-σ ≃ 100 mJy) search for maser emission from the 4765-MHz 2Π1/2 F=1→0 transition of OH. Fifty five star formation regions were searched and maser emission with a peak flux density in excess of 100 mJy was detected toward fourteen sites, with ten of these being new discoveries. In addition we observed the 4750-MHz 2Π...

Since 1994, our research has demonstrated how thermophysiological responses are mobilized in human volunteers exposed to three radio frequencies, 100, 450, and 2450 MHz. A significant gap in this frequency range is now filled by the present study, conducted at 220 MHz. Thermoregulatory responses of heat loss and heat production were measured in six adult volunteers (five males, one female, aged...

We report on advances in ac voltage metrology made possible by a new generation of Multijunction Thermal Converters (MJTCs). Although intended for use primarily in highfrequency (1 MHz to 100 MHz) metrology, their exceptional low-frequency qualities, combined with a large dynamic range, makes these MJTCs excellent devices for the frequency range 10 Hz to 100 MHz at voltages from 1 V to 20 V, de...

Typical Specifications (Dual Channel) Parameters / Model # SRF-24120910-D1 SRF-35121010-D1 SRF-77121210-D1 RF frequency 24.150 GHz 35.500 GHz 76.500 GHz Transmitter output power +10 dBm (typical) +10 dBm (typical) +10 dBm (typical) Receiver conversion loss 9 dB (typical) 10 dB (typical) 12 dB (typical) IF bandwidth DC to 100 MHz (minimum) DC to 100 MHz (minimum) DC to 100 MHz (minimum) I/Q Chan...

Wideband current transducers with a voltage output are often used to measure AC currents at frequencies up to 1 MHz. The ratio of output voltage to primary current as a function of frequency is the calibration result of these transducers. A traceable method to measure 1 A alternating current at frequencies of 100 kHz and 1 MHz is reported in this paper. The ratio of the wideband current transdu...

We have previously shown that there are two oscillating components in spontaneously fluctuating single-nephron blood flow obtained from Sprague-Dawley rats (Yip K-P, Holstein-Rathlou NH, and Marsh DJ. Am J Physiol Renal Physiol 264: F427-F434, 1993). The slow oscillation (20-30 mHz) is mediated by tubuloglomerular feedback (TGF), whereas the fast oscillation (100 mHz) is probably related to spo...