Results 31 to 40 of about 225,807 (301)

Predicted Diurnal Variation of the Deuterium to Hydrogen Ratio in Water at the Surface of Mars Caused by Mass Exchange with the Regolith [PDF]

open access: yes, 2019
Regolith on Mars exchanges water with the atmosphere on a diurnal basis and this process causes significant variation in the abundance of water vapor at the surface. While previous studies of regolith-atmosphere exchange focus on the abundance, recent in-
Hu, Renyu
core   +2 more sources

Behind the curve: a comparison of historical sources for the Carnegie curve of the global atmospheric electric circuit [PDF]

open access: yesHistory of Geo- and Space Sciences, 2020
The “Carnegie curve” describes the diurnal variation of the global atmospheric electric circuit. It was originally found from atmospheric electric potential gradient (PG) measurements made on the Carnegie, effectively a floating atmospheric electrical ...
R. G. Harrison
doaj   +1 more source

Diurnal cycle of ozone throughout the troposphere over Frankfurt as measured by MOZAIC-IAGOS commercial aircraft

open access: yesElementa: Science of the Anthropocene, 2016
Ozone is generally assumed to have weak diurnal variations in the free troposphere due to lower production rates than in the boundary layer, in addition to a much lower NO titration and the absence of dry deposition at the surface.
H. Petetin   +8 more
doaj   +1 more source

Compensation Method for Diurnal Variation in Three-Component Magnetic Survey

open access: yesApplied Sciences, 2020
Considering that diurnal variation interferes with three-component magnetic surveys, which inevitably affects survey accuracy, exploring an interference compensation method of high-precision is particularly desirable. In this paper, a compensation method
Quanming Gao   +6 more
doaj   +1 more source

Some investigations of ionospheric diurnal variation

open access: yes地球与行星物理论评, 2021
The most significant and fundamental feature of the ionospheric variations is the diurnal pattern of the ionosphere, which has very interesting and complicated phenomenon.
Libo Liu   +4 more
doaj   +1 more source

Diurnal variations in myocardial metabolism [PDF]

open access: yesCardiovascular Research, 2008
The heart is challenged by a plethora of extracellular stimuli over the course of a normal day, each of which distinctly influences myocardial contractile function. It is therefore not surprising that myocardial metabolism also oscillates in a time-of-day dependent manner.
Molly S, Bray, Martin E, Young
openaire   +2 more sources

Tongue Strength of Older Adults Requiring Long-Term Care Varies throughout the Day

open access: yesGeriatrics, 2023
Physical performance shows approximately 30% diurnal variation; however, diurnal variation in oral function remains unclear. This study aimed to determine the diurnal variation in oral and swallowing function in older adults requiring long-term care. The
Shin Yoshinaka   +9 more
doaj   +1 more source

Relations between depressed mood and vocal parameters before, during and after sleep deprivation: a circadian rhythm study [PDF]

open access: yes, 1990
The mechanism underlying improvement after total sleep deprivation (TSD) was studied in 14 major depressed patients. The suggestions that (1) circadian processes and/or (2) dimensions of arousal may play a role in the response to TSD were investigated ...
Beersma, Domien G.M.,   +3 more
core   +2 more sources

Diurnal Variations of Different Cloud Types and the Relationship between the Diurnal Variations of Clouds and Precipitation in Central and East China

open access: yesAtmosphere, 2019
In this paper, the diurnal variations of various clouds are analyzed using hourly cloud observations at weather stations in China from 1985 to 2011. In combination with merged hourly precipitation data, the relationship between the diurnal variations of ...
Cuicui Gao, Yunying Li, Haowei Chen
doaj   +1 more source

A Large Diurnal Variation of the Geomagnetically-trapped Radiation [PDF]

open access: yes, 1962
Diurnal variation of the geomagnetically trapped ...
Obrien, B. J.
core   +1 more source

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