Results 41 to 50 of about 33,884,561 (405)
Hawking Spectrum and High Frequency Dispersion [PDF]
, 1996 We study the spectrum of created particles in two-dimensional black hole geometries for a linear, hermitian scalar field satisfying a Lorentz non-invariant field equation with higher spatial derivative terms that are suppressed by powers of a fundamental
D.A. Leahy +25 more
core +2 more sources
Toward the Application of High Frequency Electromagnetic Wave Absorption by Carbon Nanostructures
Advancement of science, 2019 With the booming development of electronic information technology, the problems caused by electromagnetic (EMs) waves have gradually become serious, and EM wave absorption materials are playing an essential role in daily life. Carbon nanostructures stand
Qi Li +5 more
semanticscholar +1 more source
High frequency pressure oscillator for microcryocoolers [PDF]
, 2008 Microminiature pulse tube cryocoolers should operate at a frequency of an order higher than the conventional macro ones because the pulse tube cryocooler operating frequency scales inversely with the square of the pulse tube diameter.
H. J. Holland +11 more
core +2 more sources
High frequency of cerebrospinal fluid autoantibodies in COVID-19 patients with neurological symptoms
medRxiv, 2020 COVID-19 intensive care patients occasionally develop neurological symptoms. The absence of SARS-CoV-2 in most cerebrospinal fluid (CSF) samples suggests the involvement of further mechanisms including autoimmunity.
C. Franke +16 more
semanticscholar +1 more source
Two high-frequency mutual inductance bridges with high resolution [PDF]
, 1980 Two mutual inductance bridges are described for operation up to about 100 kHz. Special attention is paid to the sensitivity and resolution of the bridges. Both bridges can be used to measure variations of about 10 pH in the mutual inductance.
Flokstra, J. +3 more
core +3 more sources
Remote SensingThe use of near-Earth space has grown dramatically during the last decades, resulting in thousands of active and inactive satellites and a huge amount of space debris.
Jens Klare +11 more
doaj +1 more source
High frequency and high wavenumber solar oscillations
, 1999 We determine the frequencies of solar oscillations covering a wide range of degree (100< l
Ando H. +7 more
core +1 more source
Science Robotics, 2019 The Tunabot, a tuna-like experimental robotic platform, provides insights into the dynamics of high-performance aquatic locomotion. Tuna and related scombrid fishes are high-performance swimmers that often operate at high frequencies, especially during ...
Jizhong Zhu +5 more
semanticscholar +1 more source
Biosensors, 2022 Due to the occurrence of THz-excited vibrational modes in biomacromolecules, the THz frequency range has been identified as particularly suitable for developing and applying new bioanalytical methods.
Christian Weisenstein +4 more
doaj +1 more source
High Precision Measurements Using High Frequency Signals
, 2014 Generalized lock-in amplifiers use digital cavities with Q-factors as high as 5X10^8. In this letter, we show that generalized lock-in amplifiers can be used to analyze microwave (giga-hertz) signals with a precision of few tens of hertz. We propose that
Aohan Jin +10 more
core +1 more source