Results 101 to 110 of about 705,367 (158)

“Oxygen starvation” of the atmosphere

open access: yesSolar-Terrestrial Physics
Since the discovery of the phenomenon of abnormal cooling and sinking of the middle and upper atmosphere in 1993–1998, two concepts have developed which explain its origin by man-made processes.
Givishvili Givi, Leshchenko Liudmila
doaj   +1 more source

Theoretical studies of ionospheric radiowave propagation.

open access: yes, 1975
This Thesis is concerned with radiowave propagation within and below the Ionosphere at frequencies in the HF and VLF portions of the radio spectrum.
Gerald. Foley (7700636)
core   +2 more sources

Construction of Mental Health Knowledge Service Model Based on Online Medical Community. [PDF]

open access: yesComput Intell Neurosci, 2022
Xu J   +6 more
europepmc   +1 more source

Sensing Technologies for Extravasation Detection: A Review. [PDF]

open access: yesACS Sens, 2023
Hirata I   +6 more
europepmc   +1 more source

Modeling Radio Wave Propagation for Wireless Sensor Networks in Vegetated Environments: A Systematic Literature Review. [PDF]

open access: yesSensors (Basel), 2022
Barrios-Ulloa A   +4 more
europepmc   +1 more source

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