Results 1 to 10 of about 56,409 (249)
CORRELATION BETWEEN AIR TEMPERATURE AND THUNDERSTORM ACTIVITY IN SOUTH AMERICA ACCORDING TO THE ELF MEASUREMENTS IN ANTARCTICA [PDF]
Radio Physics and Radio Astronomy, 2020 Purpose: Analysis of the air temperature annual variations over different South American regions by long series of long-term meteorological observations, consideration of the physico-geographical and climatic features of the Amazonian lowlands, which ...
A. V. Paznukhov +2 more
doaj +1 more source
Gradiometer Using Separated Diamond Quantum Magnetometers
Sensors, 2021 The negatively charged nitrogen-vacancy (NV) center in diamonds is known as the spin defect and using its electron spin, magnetometry can be realized even at room temperature with extremely high sensitivity as well as a high dynamic range.
Yuta Masuyama +6 more
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The Importance of Reverberation for the Design of Neonatal Incubators
Frontiers in Pediatrics, 2021 Low frequency noises are predominant in neonatal intensive care units (NICUs). Some studies affirm that neonates can perceive noises from 113 Hz, and can therefore be affected by sound sources with high spectral content at low frequencies (e.g ...
Virginia Puyana-Romero +4 more
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IEEE Access, 2021 Electrocardiogram (ECG) has extremely discriminative characteristics in the biometric field and has recently received significant interest as a promising biometric trait.
Anthony Ngozichukwuka Uwaechia +1 more
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Extremely-Low-Noise Preamplifier for Audio Frequencies [PDF]
The Journal of the Acoustical Society of America, 1967 A low-frequency low-noise preamplifier has been designed around a recently developed field-effect transistor (FET). Data are presented on the noise performance of this FET circuit as compared with a state-of-the-art bipolar transistor circuit. The theoretical source noise for the FET circuit is computed and compared with measured values.
J. J. Truchard, J. E. Stockton
openaire +1 more source
Radio Physics and Radio Astronomy, 2019 Purpose: Search for the connection of seasonal variations in characteristics of the Earth-ionosphere global resonator with air temperature in Africa. Comparison of results obtained in Arctica, Antarctica and in the midlatitudes of the Northern Hemisphere
A. V. Paznukhov +5 more
doaj +1 more source
СВЯЗЬ ПАРАМЕТРОВ ШУМАНОВСКОГО РЕЗОНАНСА С ТЕМПЕРАТУРОЙ НА АФРИКАНСКОМ КОНТИНЕНТЕ
Український антарктичний журнал, 2018 Цель работы: поиск связи сезонных вариаций характеристик глобального резонатора Земля – ионосфера с температурой воздуха на большом временном интервале для африканского центра мировой грозовой активности.
A. V. Paznukhov +3 more
doaj +1 more source
Radio Physics and Radio Astronomy, 2017 Purpose: Correlation study of long-term seasonal variations of intensity of the global electromagnetic (Schumann) resonance in the Earth-ionosphere cavity and the air temperature for the African center of the global thunderstorm activity.
A. V. Paznukhov +3 more
doaj +1 more source
Metrology and 1/f noise: linear regressions and confidence intervals in flicker noise context [PDF]
, 2015 1/f noise is very common but is difficult to handle in a metrological way. After having recalled the main characteristics of stongly correlated noise, this paper will determine relationships giving confidence intervals over the arithmetic mean and the ...
Lantz, Eric, Vernotte, Francois
core +1 more source
Perpendicularly magnetized YIG-film resonators and waveguides with high operating power
AIP Advances, 2017 We propose a novel technique for building YIG film-based resonators and waveguides for high power operating microwave devices. Our approach is based on the effect of total internal reflection (TIR) at the interface between the non-metalized and metalized
M. Balinskiy +5 more
doaj +1 more source