The phrase "amount ratio" is correct and usable in written English.
It can be used in contexts where you are discussing the relationship between two quantities or values, often in mathematical or statistical discussions.
Example: "The amount ratio of sugar to flour in the recipe is crucial for achieving the desired texture."
Alternatives: "proportion of amounts" or "ratio of quantities".
The fluorescence switch of benzimidazole derivative can be modulated either by controlling the irradiation time of UV light or by adjusting the amount ratio of fluorescent benzimidazole derivative to photochromic naphthopyran in both solution and polymethyl methacrylate (PMMA) film.
Often, it was found that the amount ratio of the inclusion body fraction to the soluble fraction of the recombinant protein varied greatly with the changes of environmental conditions in fermentation process.
In this study, six commercial FCC catalysts were evaluated by cracking experiments on a fixed fluidized bed (FFB) and characterized of three key properties: zeolite to matrix specific surface area ratio (Z/M), total Bronsted to Lewis acid amount ratio (B/L) and zeolite unit cell size (UCS).
Multicriteria and multiple response optimization was performed based on a desirability function, yielding the following conditions: thermostatting temperature, 65 °C; thermostatting time, 15 min; number of pressurization cycles, 4; dry purge time, 0.9 min; water / sample amount ratio (dry basis), 16; and total amount (water + sample amount, dry basis), 10 g.
In order to elucidate some parameters that influence the catalytic activities, O2 reduction experiments were made by using the Nafion-polyaniline composite films prepared under different conditions including total amount of the composite film and amount ratio of polyaniline to Nafion.
The amount ratio of B acid and L acid were calculated by their corresponding peak areas.
The synergetic effects of rapid energetic radicals' bombardment, atom vapor diffusion, plasma expansion and solution medium condensation resulted in the formation of PtAu alloy clusters with various relative atom amount ratios.
These LiNbO3 nanorods were obtained through calcination of Nb2O5 and LiOH with appropriate amount ratios at 500°C for 4 h.
The linear fits of the determined area ratios over the amount ratios gave R2-values of minimum 0.9987 for mC and 0.9997 for hmC.
These materials include Vienna Peedee Belemnite relative isotope-amount ratio scales for δ13C, which are based on NBS 19, limestone (NIST, National Institute of Standards and Technology, MD, USA) and LSVEC lithium carbonate (IAEA, International Atomic Energy Agency, Vienna, Austria), and atmospheric nitrogen measurements for δ15N, which are relative to IAEA-N1 (Iand) and IAEA-N2 (IAEA).
The amounts, ratios, and types of melanin determine the skin color, and they also play the major photoprotective roles against the harmful effects by ultraviolet (UV) radiation of sunlight, including UVA and UVB [ 9].
