streak line

streak line

[′strēk ‚līn]
(fluid mechanics)
A line within a fluid which, at a given instant, is formed by those fluid particles which at some previous instant have passed through a specified fixed point in the fluid; an example is the line of color in a flow into which a dye is continuously introduced through a small tube, all dyed fluid particles having passed the tube's end.
References in periodicals archive ?
3 The MHT is based on the inactivation of a carbapenem by a carbapenemase-producing strain so that a carbapenem-susceptible indicator strain is able to grow towards a carbapenem disk along the streak line of the test strain.
On the next day, the growth was scraped off and chloroform vapour was applied on the streak line for 20 to 30 minutes.
coli ATCC25922 around the streak line of those three test isolates was assumed to be due to production of Bacteriocin but phenotypic screening test for bacteriocin production was found to be negative (Fig.
Launched on March 18, Foothill Transit's Silver Streak line integrates a host of "SMARTBus" technologies, including automatic passenger counters, GPS vehicle locating system, high definition onboard security cameras and digital destination signs.