Polarity, Alternatives, and Scales
نویسنده
چکیده
منابع مشابه
Study of Environment and pH Effects on the Spectral Behavior of Arylazobenzylidene Dyes
In this study, four arylazobenzylidene dyes (a-d) were synthesized with excellent yields in two steps using Knoevenagel condensation and azo-coupling reactions. Absorption spectra of these dyes with different substituents were investigated in organic solvents as a function of solvent polarity. The spectral features of synthesized arylazobenzylidene dyes were described according to azo-hydrazone...
متن کاملMeaning as an Inferential System: Polarity and Free Choice Phenomena
negation) but behave otherwise like weak NPIs. 4.5. Summary and conclusions. This chapter has investigated a series of serious challenges to our guiding idea that NPIs are weakest scalar elements with obligatorily activated alternatives. Some maybe interesting results have come out of these challenges. Perhaps the main ones are three. First, to solve a problem that led to a blatantly wrong pred...
متن کاملFeature Detection Algorithm Based on a Visual System Model
An algorithm for the detection of visually relevant luminance features is presented. The algorithm is motivated and directed by current models of the visual system. The algorithm detects edges (sharp luminance transitions) and narrow bars (luminance cusps) and marks them with the proper polarity. The image is first bandpass filtered with oriented filters at a number of scales an octave apart. T...
متن کاملUnderstanding the polarity of ionic liquids.
The polarities of a wide range of ionic liquids have been determined using the Kamlet-Taft empirical polarity scales α, β and π*, with the dye set Reichardt's Dye, N,N-diethyl-4-nitroaniline and 4-nitroaniline. These have been compared to measurements of these parameters with different dye sets and to different polarity scales. The results emphasise the importance of recognising the role that t...
متن کاملA Mechanism Underlying the Electrical Polarity Detection of Sensitive Plant, Mimosa Pudica
Natural indicators of the electrical polarity of a direct current (DC) source is limited to semiconductor based diodes and transistors. Recently a novel bio-natural indicator of the polarity of a DC source have been reported. Mimosa Pudica or sensitive plant is found to be a natural detector of a DC source polarity, however the mechanism underlying this phenomenon is not known. This paper aims ...
متن کامل