After studying the government's ledgers, the collector discovered that the three per cents had appreciated in market value due to falling interest rates.

The wind gusts reached thirty feet per second during the storm.

The engineer specified foot per second as the unit to record the object's velocity during testing.

By invoking obscurum per obscurius in his paper, the researcher ended up making the concept even less accessible to readers.

When listing unpublished sources, many journals accept the notation pers. comm. to denote information obtained directly from colleagues.

The lab implemented strict handling protocols when working with peracetic solutions to prevent accidental exposure.

Because peracetate can decompose violently, the chemist stored it in a ventilated cabinet away from organic materials.

In the lab, we handled several peracids with extreme care due to their strong oxidizing properties.

The lab stored several peracetates in labeled amber bottles to prevent decomposition.

After years of advocacy, the peracephalus finally had access to specialized medical care and community support.