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Taking into account the ratio between the H3PO4 addition amount, in % (w/o) and the PbO2 active mass per unit surface area, from the lead acid batteries, we can conclude that the small H3PO4 additions do not decrease the capacity of the active mass of the battery, but they hinder the insulator film formation between the active mass and the grid.
The average mass per unit surface area was quantified using five replicates comprising six discs each.
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As a consequence of the different wet bulk densities, the same treatment for different amendments required different masses per unit surface area (Table 1).
Because the star is much smaller than the Sun, however, the mass loss per unit surface area from Proxima Centauri may be eight times that from the solar surface.
It is more scientific to measure the surface excess (Γs) which is the mass of polymer per unit surface area of the solid.
Rather low liquid liquid (L L) and gas liquid (G L) mass transfer rates per unit surface area of ceramic membrane tube, being in the range of 10−5 mol m−2 s−1, were further measured either for organic compounds dissolved in water or gases.
Cuticular membranes were isolated enzymatically; the mass of CM per unit surface area and per fruit and the CM thickness were determined as described previously.
The HVS3 is designed to collect particles >5 microns in diameter and to achieve constant dust removal efficiency across different types of carpet, allowing an estimation of chemical loading (mass of chemical per unit surface area of carpet).
In a typical nanotoxicity study, engineered nanomaterials are introduced in specialized media for biological application and dose is described as the total particle mass/number, surface area or volume of the particles per unit volume of liquid media or per unit surface area of the well (sedimentation surface).
The number of stabilizing chains per unit surface of the particle core σS increases with the shell-to-core mass ratio xshell/xcore.
Results are expressed per unit surface area.
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Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com