The phrase "a reduction in quantity" is correct and usable in written English.
It can be used when discussing a decrease in the amount of something, such as resources, products, or data.
Example: "The recent changes in policy have led to a significant reduction in quantity of available resources for the project."
Alternatives: "a decrease in amount" or "a decline in volume."
Subsequent cold rolling (CR) of the LNT-DPD Cu led to a reduction in quantity of nano-twin bundles and a slight grain coarsening, accompanied by a decrease in grain boundary (GB) energy from 0.34 to 0.22 J m−2.
We also found that inhibition of miR-181s leads to a reduction in quantity and tumor initiating ability of EpCAM+AFP+ HepCSCs, suggesting the potential utility of these miRNAs as molecular targets of HepCSC [ 9, 10].
For others, it may be easier to target a reduction in quantity for specific food groups or times of day.
Pleading the danger of Bolshevism in a nation on the verge of collapse, the German delegation obtained some mitigation of these terms: a suggestion that the blockade might be relaxed, a reduction in the quantity of armaments to be handed over, and permission for the German forces in eastern Europe to stay put for the time being.
This close spacing gives improved fragmentation, the ability to fire many holes with hardly any more vibration or concussion than would be obtained with one hole, less chance that the detonation of one hole will cut off an adjacent hole, and a reduction in the quantity and cost of explosives.
The decrease in the ratio of the D/G bands may be explained in terms of an increase in the crystallite domains or a reduction in the quantity of amorphous carbon.
The river was formerly a food source with yabbies, mussels and small fish, however the reduction in water quality, changing of the river's habitat, and introduction of European fish species has led to a reduction in fauna quantity and diversity.
This contrasts with a modest histological change, suggesting deactivation rather than depopulation of the synovium, although a reduction in synovial "quantity" is observed as evidenced by the MRI.
This may lead to a reduction in the quantity and quality of care globally, which would reversing the substantive progress that has occurred over the past 20 years.
