Results 71 to 80 of about 1,607 (205)
, 2018 Kiloparsec-scale dual active galactic nuclei (AGNs) are active supermassive black hole pairs co-rotating in galaxies with separations of less than a few kpc.
Greene, Jenny E. +4 more
core +1 more source
Reduction of heat sink common-mode currents in switching mode power supply circuits [PDF]
, 2011 In this paper, a new filter design for a heat sink is presented. The parasitic couplings between electric power devices and the heat sink are responsible for common-mode currents.
J. H. Hagmann +3 more
core +1 more source
, 1981 Trace gases in the upper atmosphere can be measured by comparing spectral noise content of limb soundings with the spectral noise content of cold space. An offset Cassegrain antenna system and tiltable input mirror alternately look out at the limb and up
Gustincic, J. J.
core +1 more source
Path loss measurement and modeling of 5G network in emergency indoor stairwell at 3.7 and 28 GHz. [PDF]
PLoS One, 2023 Samad MA, Choi DY, Choi K.
europepmc +1 more source
The origin of the radio emission from beta Lyrae
, 2002 In this paper we present new observational evidence that supports the presence of an extra source of continuum emission in the binary system beta Lyrae. New VLA and IRAM observations, together with published data from the literature and ISO archive data,
Leone, F., Trigilio, C., Umana, G.
core +1 more source
Comparison of Optical, Radio, and Acoustical Detectors for Ultrahigh-Energy Neutrinos
, 1995 For electromagnetic cascades induced by electron-neutrinos in South Pole ice, the effective volume per detector element (phototube, radio antenna, or acoustic transducer) as a function of cascade energy is estimated, taking absorption and scattering into
Price, P. B.
core +1 more source
Small Aircraft RF Interference Path Loss Measurements [PDF]
Interference to aircraft radio receivers is an increasing concern as more portable electronic devices are allowed onboard. Interference signals are attenuated as they propagate from inside the cabin to aircraft radio antennas mounted on the outside of ...
Ely, Jay J. +5 more
core +1 more source
The Exposure to 2.45 GHz Electromagnetic Radiation Induced Different Cell Responses in Neuron-like Cells and Peripheral Blood Mononuclear Cells. [PDF]
Biomedicines, 2023 Bertuccio MP +4 more
europepmc +1 more source
, 2005 We conducted a 4 epoch 3 month VLBA proper motion study of H$_2$O masers toward an intermediate-mass class 0 source IRAS 20050+2720 MMS1 (d=700 pc). From milli-arcsecond (mas) resolution VLBA images, we found two groups of H2O maser spots at the center
A. Wootten +36 more
core +1 more source
Wideband Omnidirectional Antenna Featuring Small Azimuthal Gain Variation. [PDF]
Micromachines (Basel), 2023 Zhang H +5 more
europepmc +1 more source