Results 41 to 50 of about 3,774,465 (361)

Fluid Metabolism in Athletes Running Seven Marathons in Seven Consecutive Days

open access: yesFrontiers in Physiology, 2018
Purpose: Hypohydration and hyperhydration are significant disorders of fluid metabolism in endurance performance; however, little relevant data exist regarding multi-stage endurance activities.
Daniela Chlíbková   +5 more
doaj   +1 more source

Sodium Pentazolate: a Nitrogen Rich High Energy Density Material [PDF]

open access: yes, 2015
Sodium pentazolates NaN5 andNa2N5, new high energy density materials, are discovered during first principles crystal structure search for the compounds of varying amounts of elemental sodium and nitrogen. The pentazole anion N5- is stabilized in the condensed phase by sodium Na+ cations at pressures exceeding 20 GPa, and becomes metastable upon release
arxiv   +1 more source

Incidence of Hyponatremia During a Continuous 246-km Ultramarathon Running Race

open access: yesFrontiers in Nutrition, 2019
Purpose: The purpose of this observational study was to examine the incidence of exercise-associated hyponatremia (EAH) in a 246-km continuous ultra-marathon.Methods: Over 2 years, 63 male finishers of the annual Spartathlon ultra-marathon foot race from
Adam D. Seal   +9 more
doaj   +1 more source

Sodium pentafluorophenylborate [PDF]

open access: yes, 2012
The crystal structure of the title compound, Na[(C6F5)BH3], is composed of discrete anions and cations. The sodium cations are surrounded by four anions with three short Na...B [2.848 (8), 2.842 (7) and 2.868 (8) Å] and two short Na...F contacts [2.348 ...
Bolte, Michael   +2 more
core   +1 more source

Sodium modeling

open access: yesKidney International, 2000
The most serious side effects induced by hemodialysis therapy are caused by changes in sodium concentration and subsequent water shift between the intracellular and extracellular fluid compartment. Because of inadequate precision of proportioning, a certain sodium concentration and considerable error in the measurement of sodium concentration in ...
Mann, Helmut, Stiller, Siegfried
openaire   +2 more sources

Using Electrolyte Free Water Balance to Rationalize and Treat Dysnatremias

open access: yesFrontiers in Medicine, 2018
Dysnatremias or abnormalities in plasma [Na+] are often termed disorders of water balance, an unclear physiologic concept often confused with changes in total fluid balance. However, most clinicians clearly recognize that hypertonic or hypotonic gains or
Sanjeev R. Shah, Gautam Bhave
doaj   +1 more source

Renal sodium handling and sodium sensitivity

open access: yesKidney Research and Clinical Practice, 2017
The pathophysiology of hypertension, which affects over 1 billion individuals worldwide, involves the integration of the actions of multiple organ systems, including the kidney. The kidney, which governs sodium excretion via several mechanisms including pressure natriuresis and the actions of renal sodium transporters, is central to long term blood ...
Alissa A. Frame, Richard D Wainford
openaire   +3 more sources

Melting of sodium clusters in electron irradiated NaCl [PDF]

open access: yes, 2004
In this paper we present the results of the first systematic investigation of the geometrical properties of sodium nanoclusters in NaCl using the combined results of differential scanning calorimetry (DSC) and atomic force microscopy (AFM).
Bukharaev, A.A.,   +4 more
core   +3 more sources

First sodium laser guide star asterism launching platform in China on 1.8m telescope at Gaomeigu Observatory [PDF]

open access: yes, 2023
The application of sodium laser guide star is the key difference between modern adaptive optics system and traditional adaptive optics system. Especially in system like multi-conjugate adaptive optics, sodium laser guide star asterism which is formed by several laser guide stars in certain pattern is required to probe more atmospheric turbulence in ...
arxiv   +1 more source

How Much Information Does the Sodium Doublet Encode? Retrieval Analysis of Non-LTE Sodium Lines at Low and High Spectral Resolutions [PDF]

open access: yes, 2019
Motivated by both ground- and space-based detections of the sodium doublet in the transmission spectra of exoplanetary atmospheres, we revisit the theory and interpretation of sodium lines in non-local thermodynamic equilibrium (NLTE), where collisions are not efficient enough to maintain a Boltzmann distribution for the excited and ground states of ...
arxiv   +1 more source

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