The phrase "a systematic decrease of" is correct and usable in written English.
It can be used when describing a consistent or organized reduction in a particular quantity or phenomenon over time.
Example: "The study revealed a systematic decrease of biodiversity in the region over the past decade."
Alternatives: "a gradual reduction in" or "a consistent decline of".
With increasing temperature, a systematic decrease of the fluorescence intensity has been detected, which, however, is still directly proportional to the fuel/air ratio.
However, a systematic decrease of MS signal intensity was observed in SFC mode when compounds were ionized using UniSpray in the negative ion mode.
A systematic decrease of the calorimetric glass temperature Tg as well as of the softening temperatures TαDMA and TαDRS from relaxation methods is observed with increasing length of the diol sequences between neighbored diisocyanate units acting as cross-linker.
The results showed a systematic decrease of the column performance for uracil at high flow velocities with decreasing column inner diameter, in agreement with the theoretical predictions of the variation of the trans-column eddy dispersion HETP term with decreasing bed aspect ratio.
This, in turn, would result in a systematic decrease of BSUV.
By performing experiments at fixed oxygen concentrations as well as with oxygen concentrations varying freely with temperature, we demonstrate that this strong temperature dependence of denitrification can be explained by a systematic decrease of oxygen concentrations with rising temperature.
To demonstrate that the mice were not forming long-term spatial memories we increased the interval between phases (2 480 min) and found a systematic decrease in the performance of controls and cKO animals (main effect of time F (5, 100) = 15.55, p<0.05) that did not differ between groups (no time x genotype interaction F<1) (data not shown).
A systematic decrease in the breadth of the service temperature window and mechanical properties of the polyureas were observed in the presence of LiCl, due to the disruption of the long range connectivity between the hard segments.
A systematic decrease in the content of titanium and an increase in the relative content of europium are observed with the increasing nominal concentration of the dopant in the samples.
This suggests that the 42% lower overall evolutionary rate of TM regions relative to EM regions (fig. 2) is due to a combination of two effects: 1) a general enrichment for buried, slowly evolving residues in TM regions (fig. 3 A) and 2) a systematic decrease in the evolutionary rates of all TM residues, independent of degree of burial (fig. 4).
Again, these effects lead to a systematic decrease in the visibility of the Sagnac interferometer, and our data analysis accounts for this.
