This figure is reformulated to give a H+ concentration of 3.18 · 10−7 mol/l in pure H2O at 25°C. A new interpretation of the limiting equivalent conductances of HCl and KOH involving the collective motion of all ions in the bulk of the solution is given. Then a new mode of ...
The influence of heavy water of low concentration on Spirogyra, Planaria and on enzyme action that low concentrations of the heavy isotope of hydrogen in water will yield more significant physiological results than pure heavy water. The water employed had been slightly concentrated by commercial elec...
Parimal Pal, in Industrial Water Treatment Process Technology, 2017 Solute Flux For diffusion of the solute through the membrane, the solute flux is expressed as: (5.53)Ns=DsKsLm(c1−c2)=As(c1−c2)As=DsKsLm where Ns=solute (salt) flux, kg solute/m2·s; Ds=diffusivity of solute in...
Consequently, the normality of a reagent may be different, depending on the type of reactions involved in particular cases. Brown et al. (1991) explained: “For acid-base reactions, an equivalent of an acid is the quantity that supplies 1.0 mole of H+; an equivalent of a base is the ...
Spectrofluorometric determination of intracellular levels of reactive oxygen species in drug-sensitive and drug-resistant cancer cells using the 2′,7′-di... SpectrofluorometryThis article examines a non-invasive spectrofluorometric method using the 2′,7′-dichlorofluorescein diacetate (DCHF-DA) assay...
Ice nucleus concentrations in samples of city air have been determined by using a continuous flow diffusion chamber. The chamber has been set-up so that ic... R Al-Naimi,CPR Saunders - 《Atmospheric Environment》 被引量: 86发表: 1985年 Viscosity of deeply supercooled water and its coupling ...
Fig. 1: AβOs assemble from dimAβ in a lag-free oligomerization reaction. a Scheme of AβO and amyloid fibril formation. b Biphasic assembly kinetics of dimAβ at pH 7.4 and indicated concentrations monitored by ThT fluorescence. The experimental replicates illustrate the good reproducibility of...
This explicitly holds for the pure advection case, while in the case of LSD presence the Moment Deriv-ing Function (MDF) is involved to ensure the moment collapse validity. Fur-thermore, the expected mass fraction (EMF) concept is applied in groundwater transport. In its origin, EMF is ...
Samples were taken from a PETROBRAS unit in Northeast Brazil. They were collected directly from the inner surface of water pipes or from barrels stored in the waste storage area of the E&P unit. The oil was separated from the solids with a Soxhlet extractor by using aguarras at 90 ...
A fundamental understanding of ion charge storage in nanoporous electrodes is essential to improve the performance of supercapacitors or devices for capacitive desalination. Here, we employ in situ X-ray transmission measurements on activated carbon supercapacitors to study ion concentration changes during ...