positive control


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positive control

i. A method of airspace control that relies on positive identification, tracking, and the direction of an aircraft within an airspace, conducted with electronic means by an agency with the authority and responsibility.
ii. Tactical control of an aircraft by a designated control unit, in which the pilot receives orders affecting the aircraft's movements and which immediately transfers responsibility for its safe navigation to the unit issuing the orders.
References in periodicals archive ?
2]) treated cells were used as positive control for DCF-DA analysis, Cells were then washed twice in serum-free medium and resulting fluorescence were quantitated in a fluorescence microplate reader using an excitation wavelength of 488 nm and emission wavelength of 53 nm.
At this concentration, bakuchiol manifested equivalent osteoblasts differentiation activity comparing with the positive control icariin.
Positive control group with 0 negative control group Positive control group with 0.
Most frequently these represent a special case of PCR positive control, and consist of a set of PCR positive controls of known concentrations.
As far as having us climb to 2,000 feet, the student controller had terminated our approach but retained us under positive control.
Utilizing one VHF radio, line controllers gained positive control of all air traffic over the central one-third of Iraq.
In each of 10 patients, eight teeth with a residual probing depth of 5 mm following periodontal therapy were randomly assigned to the following interventions: the glycine powder air-polishing (GPAP) group, which was the test group; the sodium bicarbonate air-polishing group (SBAP), which was apositive control group; the hand instrumentation group, also a positive control group; and a no-treatment group that was a negative control group.
It could be argued that religion is exercised as a form of social, intellectual and positive control over society as a whole and that critics use their own elevated position to justify rigid and doctrinaire interpretation of the meaning of existence to reinforce the authority of their own certainties of opinion.
Diet 1 based on corn-soybean meal was used as positive control 1, and diet 2, a practical diet which incorporated a conventional level of Chinese DLRM (60 g/kg diet), as positive control 2.
We therefore constructed a positive control by using a clinical specimen of the swCT variant in which the deletion was present (forward swCT 5'-TCC GGA TAG TGA ATT ATA GAG ACT ATT TAA TC-3' reverse swCT 5'GGT GTT TGT ACT AGA GGA CTT ACC TCT TC-3') (2).
05%, it was able to match the stability of the positive control (0.
The use of a positive control is commendable when the mode of action is known [National Toxicology Program (NTP) 2001]; however, as in the study of Oehlmann et al.

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