Sentence examples for been observed using a from inspiring English sources

"Birds have never before been observed using a tool for more than one purpose," said Wimpenny.

It's the first time birds have ever been observed using a tool for more than one purpose.

The emissions of O− radical anions and electrons from a silver electrode on a solid electrolyte, yttria-stabilized zirconia (YSZ) or a quartz glass, have been observed using a quadrupole mass spectrometer.

For instance, it has been observed using a combination of glutamate binding-deficient and G protein coupling-deficient receptors that the mGlu1 receptor triggers Gq-coupled signalling through cis- and trans-activation, while Gi/o and Gs are exclusively activated through cis-activation (Tateyama and Kubo 2011).

Dolphins have long been observed using a hunting technique in which they blow bubbles around fish to force them closer together (the so-called "bubble nets" make the fish easier to catch).

Parent birds have been observed using a range of anti-predator strategies: the female staying on the nest until almost touched; one or other of the pair performing distraction displays, fluttering wings and moving across the ground; the female flying rapidly at the intruder; and both birds giving harsh scolding calls when a kookaburra, tiger snake or currawong approached.

The samples were observed using a microscope.

Fluorescence was observed using a confocal laser scanning microscope.

The sample morphology was observed using a SEM (LEO 1530VP).

Positive amplification was observed using a fluorescent detection reagent.

Flame behavior was observed using a high-magnification video system.