Exact(25)
The observed color changes in acetone suggested that the solvent was altered or decomposed due to laser heating or reaction with the Mg particles [28].
The brown bag criterion survives as a metaphor for how the black cultural elite quite literally establishes caste along color lines within black life….I have observed color politics at work among black folk.
Therefore, observed color polymorphism in these studies is not neutral from an evolutionary point of view.
Separate selections of lower and upper backs were taken because we observed color differences between these regions in many lizards.
Bromothymol blue (also known as bromthymol blue; BTB) is a commonly used pH indicator and was selected for ammonia screening because of its easily observed color change from yellow to blue at pH 7.6.
Under diffuse illumination the observed color blue-shifts for increasing observation angle.
Similar(35)
When we observed color-ringed sanderlings during an off-bout they usually were foraging (cf. [10]), but we ocassionally also observed sanderling males leaving their nest to chase away other sanderlings in the vicinity, as was also observed by [36].
Generally, there is lack of water quality awareness among many water vendors; their perception on water quality is typically assessed by observing color, odor and taste of water.
Various statements about the quality of a combustion process can be done just by observing color and surface of the flame.
Coronary occlusion and reperfusion were confirmed by visual inspection under a dissecting microscope by observing color changes of the tissue.
We did not observe color differences in tissues other than leaf midrib.
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