Results 11 to 20 of about 12,777,091 (283)
Diethyl 3,3′-[(4-fluorophenyl)methylidene]bis(1H-indole-2-carboxylate)
IUCrData, 2019 In the title compound, C29H25FN2O4, the mean planes of the indole ring systems (r.m.s. deviations = 0.0107 and 0.0158 Å) are approximately perpendicular to each other, subtending a dihedral angle of 87.43 (16)°. The 4-fluorophenyl ring is twisted by 77.6
Yu-Long Li +6 more
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Lexical-Grammatical Means of Expressing Oppositivity in an English Literary Text
RUDN Journal of Language Studies, Semiotics and Semantics, 2021 The article considers the notional nature and peculiarities of genus-species relations between the phenomena of opposition and oppositivity ; it also deals with the lexical-and-grammatica ways of expressing the latter in an English literary text.
Larisa N. Lunkova, Julia I. Frolova
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Protein-based molecular contrast optical coherence tomography with phytochrome as the contrast agent [PDF]
, 2004 We report the use of phytochrome A (phyA), a plant protein that can reversibly switch between two states with different absorption maxima (at 660 and 730 nm), as a contrast agent for molecular contrast optical coherence tomography (MCOCT).
Choma, Michael A. +4 more
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Crystal structure of diethyl 3,3′-[(2,4-dichlorophenyl)methylidene]bis(1H-indole-2-carboxylate)
Acta Crystallographica Section E: Crystallographic Communications, 2017 In the title compound, C29H24Cl2N2O4, the mean planes of the two indole ring systems (r.m.s. deviations = 0.1249 and 0.0075 Å) are approximately perpendicular to one another, with a dihedral angle of 80.9 (5)° between them.
Yu-Long Li +4 more
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Assessing the monitor warm-up time required before a psychological experiment can begin [PDF]
Tutorials in Quantitative Methods for Psychology, 2017 Visual experiments in psychology, psychophysics, and cognitive neuroscience require precise control over stimulus characteristics, such as luminance and contrast. In such experiments, stimuli are most often presented using computer monitors.
Poth, Christian H., Horstmann, Gernot
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Pattern specificity of contrast adaptation. [PDF]
, 2014 Contrast adaptation is specific to precisely localised edges, so that adapting to a flickering photograph makes one less sensitive to that same photograph, but not to similar photographs.
Anstis, Stuart
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Spectral triangulation molecular contrast optical coherence tomography with indocyanine green as the contrast agent [PDF]
, 2004 We report a new molecular contrast optical coherence tomography (MCOCT) implementation that profiles the contrast agent distribution in a sample by measuring the agent's spectral differential absorption.
Applegate, Brian E. +5 more
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Crystal structure of diethyl 3,3′-[(4-nitrophenyl)methylene]bis(1H-indole-2-carboxylate)
Acta Crystallographica Section E: Crystallographic Communications, 2017 In the title compound, C29H25N3O6, the mean planes of the two indole ring systems (r.m.s. deviations = 0.0115 and 0.0082 Å) are approximately perpendicular to one another, making a dihedral angle of 89.7 (5)°; the benzene ring is twisted with respect to ...
Hong-Shun Sun +4 more
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IEEE Access, 2021 A fusion algorithm is proposed for the restoration and enhancement of underwater images. Color balance, contrast optimization and histogram stretching are carried out. To alleviate the effect of color shift in an underwater image, the scalar values of R,
Weilin Luo, Shunqiang Duan, Jiwen Zheng
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Comparison and contrast in perceptual categorization [PDF]
, 2005 People categorized pairs of perceptual stimuli that varied in both category membership and pairwise similarity. Experiments 1 and 2 showed categorization of 1 color of a pair to be reliably contrasted from that of the other.
Abramov +15 more
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