Although based on a very narrow sampling of animal diversity, it is clear that most references to the evolution of "the" eye relate to the chambered, camera-type lens eyes found in humans and other vertebrates, as well as in cephalopod mollusks, some annelid worms, and various arthropods including spiders.
Pinched microfluidic injection enables the formation of very narrow sample plugs for fast, efficient separations, but the injected volume is fixed by the device geometry, and a quantitative bias may still be present because of more rapid depletion of high-mobility species from the sample reservoir.
The pulses cancelled one another in the middle of the sample, leaving only a very narrow slice of the sample to fluoresce into the detector.
In particular, the InGaAs reference sample shows a very narrow (FWHM ~6 meV) PL peak, indicating stable MBE growth conditions and very uniform composition distribution for the InGaAs ternary alloy epi-layer.
As seen in Table 1 in some cases, this resulted in study samples with a very narrow glucose range.
The same signal present in each of the Scheme 2, 3, and 4 samples has a very narrow line width and is presumed to be L2, which lies near the N-terminus and is highly flexible.
These findings are further supported by the dozens of additional studies that have used less sensitive or less selective methodologies, because all of these studies report conjugated or unconjugated BPA levels in human samples in a very narrow range of concentrations.
On the other hand, a very narrow photoluminescence spectrum is observed from the sample grown on (311) with FWHM = 7.8 nm.
Similar to the initial total RNA profile, cRNA for sample 390 showed a very narrow distribution range and lacked fragments above ~500 nt.
All but four of the avidity index values, including all values obtained for samples collected when women were pregnant, were in a very narrow range (between 98.4% and 101.7%); four samples collected when women were not pregnant had values between 68.0% and 78.1%.
