The phrase "a significant decrease in the intensity" is correct and usable in written English.
You can use it when discussing changes in levels or amounts, particularly in scientific, technical, or analytical contexts.
Example: "The experiment showed a significant decrease in the intensity of the light after the filter was applied."
Alternatives: "a notable reduction in the intensity" or "a marked decline in the intensity."
The pain assessment after virtual reality condition showed a significant decrease in the intensity of pain (p < 0.01).
Meanwhile, there is a significant decrease in the intensity of the adsorption bands of the oxygenated functional groups for the AgGO sample (Figure 5).
Furthermore, there was a significant decrease in the intensity of quartz phase as compared to the specimens with 100% natural sand.
After conjugation of PMIDA on nanoparticle surface a significant decrease in the intensity of the band at 3,440 cm−1 which indicates the conjugation of phosphonic acid on CoO NPs.
A significant decrease in the intensity of fluorescence induced by intoxication was demonstrated in the Net1 RNAi treated cells as compared to controls (Figure 3C).
Immunohistochemical studies showed that M90T also induced a significant decrease in the intensity of NSE labelling of enteric neurons (−45±11%; n = 8; p<0.001) as compared to BS176 (Figure 6 A C).
A significant decrease in the fluorescence intensity of MARK4 was observed on successive addition of the PKR-inhibitor.
The increasing proportion of renewable energy in the state has caused a significant decrease in the emissions intensity of electricity generation in South Australia.
Moreover, we noted a significant decrease in the staining intensity in both epithelial cells of the corpus and cauda regions.
A significant decrease in the autofluorescence intensity between normal and dysplastic mucosa was observed at all four excitation wavelengths investigated.
Since the fluorophore and dark quencher are in proximity, a significant decrease in the fluorescence intensity is observed with a plateau at 1 equiv of the quencher strand.
