The phrase "a downward tendency" is correct and usable in written English.
It can be used to describe a trend or pattern that is decreasing or declining over time.
Example: "The data shows a downward tendency in sales over the past quarter, indicating a need for strategic changes."
Alternatives: "a declining trend" or "a downward trend".
However, with the increase of Mg/Al molar ratio diesel yield showed an upward tendency, but slurry yield showed a downward tendency.
As shown in Figure 5b, due to increased mortality, the available coverage ratio shows a downward tendency, which is correlated with the result in Figure 5a.
Furthermore, DMFC MEAs designed by the combination method retain high power density without any degradation, while the CCM-type cell shows a downward tendency in electrochemical performance under air-blower conditions.
Consistent with the findings obtained with [14C]-oleic acid experiments, CFTR knockdown cells displayed higher levels of secreted FA than mock-control cells following [14C]-acetate incubation whereas cellular level of FFA exhibited a downward tendency at the expense of increased secretion documented by the augmented output of PL, TG and CE (Figure 8).
Any model but the fixed model showed a downward tendency.
Thus, many of the genes that Cossins et al. [ 32] found upregulated by cold in the carp intestine with transport and regulatory functions (see Additional file 1: Table S8) had, when present, a downward tendency in the HT gonads.
However, the LSD values of the proposed method maintain a stable downward tendency.
The top left plot is the number of the susceptibles, S ( t ), which shows a slow downward tendency.
If countries do not comply with their fiscal rule in the year or forecast before, there is a strong downward tendency of the constrained variable towards the numerical limit.
It is worth noting that there was a slight downward tendency in isoprenaline-stimulated AC activity in the later stages of embryonic development.
