Age tends to diminish night vision, especially the ability to distinguish contrast, and older drivers are vulnerable to what engineers call "overglow" or "halation," when letters lighted by headlights blur together.
"You want a goggle that's not going to fog up" and can distinguish contrasts in the snow, Ms. McIntyre said.
The classes presented distinguish contrasts in the ambient air quality environment through the formation of categories that generally reflect high frequency modes of the multipollutant distribution.
Macular pathology, as occurs in AMD, results in difficulty in seeing letters on a page, reduced ability to distinguish contrasts, distortion of straight lines, central visual field defects, scotomas and color vision impairment (Fig. 1).
In mice, gold nanoparticles provided bright contrast enhancement that enabled clear visualization of the abdominal aorta and renal arteries, which could not be distinguished without contrast agent.
The Italian Biagio Marini's sinfonia La Orlandia (1617) is a duet for violin or cornetto (a wind instrument with finger holes and cup-shaped mouthpiece) and continuo in five brief contiguous sections, distinguished by contrasting metres and new melodic material in each section.
The two groups are distinguished by contrasting floral morphology associated with different pollination syndromes, but within each group vegetative features are more useful for species recognition and identification (Sandral et al. 2006).
Conversely, USPIO have a long blood half-life (up to 24 h), which for MRI of endothelial molecular targets, may cause high background contrast for an extended period, making it difficult to distinguish specific contrast effects from normal tissue heterogeneity and other susceptibility artefacts.
Conversely, USPIO may cause high background contrast due to its long blood half-life (up to 24 h), making it difficult to distinguish specific contrast effects from normal tissue heterogeneity and other susceptibility artifacts.
