Results 31 to 40 of about 235,609 (336)

Diurnal variation of the potassium layer in the upper atmosphere [PDF]

, 2015
Measurements of the diurnal cycle of potassium (K) atoms between 80 and 110km have been made during October (for the years 2004–2011) using a Doppler lidar at Kühlungsborn, Germany (54.1°N,11.7°E).
Chang, Clemesha, D. R. Marsh, E. C. M. Dawkins, Eska, Feng, Hagan, Höffner, J. Höffner, J. M. C. Plane, Kopp, Langowski, Lübken, M. P. Chipperfield, Marsh, Marsh, Plane, Plane, Plane, Plane, Smith, T. P. Viehl, W. Feng, Ward, Yu, Zahn, Zhou   +26 more
core   +1 more source

In Athletes, the Diurnal Variations in Maximum Oxygen Uptake Are More Than Twice as Large as the Day-to-Day Variations

Frontiers in Physiology, 2019
In competitive sports any substantial individual differences in diurnal variations in maximal performance are highly relevant. Previous studies have exclusively focused on how the time of day affects performance and disregarded the maximal individual ...
Raphael Knaier, Denis Infanger, Max Niemeyer, Christian Cajochen, Christian Cajochen, Arno Schmidt-Trucksäss   +5 more
doaj   +1 more source

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

History 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

PIIANP and HELIXII diurnal variation [PDF]

Osteoarthritis and Cartilage, 2008
Serum levels of procollagen type IIA N-terminal propeptide (sPIIANP) and type-II collagen helical peptide (sHELIXII) biomarkers were evaluated for variation diurnally and with physical activity and food in participants with osteoarthritis (OA) of the knee.Forty participants with OA of at least one knee were admitted overnight to the General Clinical ...
Quintana, D.J., Garnero, P., Huebner, J.L., Charni-Ben Tabassi, N., Kraus, V.B.   +4 more
openaire   +2 more sources

Measurements of positive ions and air-earth current density at Maitri, Antarctica [PDF]

, 2007
Simultaneous measurements of the small-, intermediate- and large- positive ions and air earth current density made at a coastal station, Maitri at Antarctica during January to February 2005, are reported.
Fuchs N. A., Hirsikko A., Hogg A. R., Hogg A. R., Israel H., Norinder H., Roble R. G., Simpson G. C., Virkkula A.   +8 more
core   +3 more sources

Some investigations of ionospheric diurnal variation

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, Yiding Chen, Ruilong Zhang, Huijun Le, Hui Zhang   +4 more
doaj   +1 more source

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

, 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

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

Elementa: 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, V. Thouret, G. Athier, R. Blot, D. Boulanger, J.-M. Cousin, A. Gaudel, P. Nédélec, O. Cooper   +8 more
doaj   +1 more source

Compensation Method for Diurnal Variation in Three-Component Magnetic Survey

Applied 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, Defu Cheng, Yi Wang, Supeng Li, Mingchao Wang, Liangguang Yue, Jing Zhao   +6 more
doaj   +1 more source

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

Geriatrics, 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, Kohei Yamaguchi, Ryosuke Yanagida, Miki Ishii, Kazuharu Nakagawa, Kanako Yoshimi, Ayako Nakane, Yusuke Matsuyama, Jun Aida, Haruka Tohara   +9 more
doaj   +1 more source