Most whiteness formulas currently in use satisfactorily characterize the appearance of commercial whiteness. However, when these formulas are applied to colored samples they are generally unsuccessful in assessing tinted samples with chromaticities placed on the borders of white colors. In this study, new formulas expressing whiteness are proposed. These are compared with CIE, Hunter and Ganz w...

in this study, the effect of the speed of the mill-rotor during the whitening process was evaluated for the milling properties of two varieties of rice in fars province. a split plot design with five replications and the duncan test were used for statistical analysis. two varieties of paddy rice, amol-3 and kamfiruzi, and five mill-rotor speeds, 550, 600, 650, 700 and 750 rpm, were selected as ...

The whiteness of cooked rice and rice cakes was evaluated using a portable spectrophotometer with a whiteness index (WI). Also, by using boiled rice for measurement of Mido values by Mido Meter, it was possible to infer the whiteness of cooked rice without rice cooking. In the analysis of varietal differences of cooked rice, 'Tsuyahime', 'Koshihikari' and 'Koshinokaori' showed high whiteness, w...

The effect of mean gloss level on perceived whiteness was evaluated by magnitude estimation and pair wise comparison of papers with varying shades and gloss levels. The samples were printed on substrates of different gloss to target L*a*b* values measured under a light booth illumination having a 5000 K correlated colour temperature. Observers were able to rate the whiteness of the samples with...

This thesis is about modelling and predicting the perceived whiteness of plain paper from the paper composition, including fluorescent whitening agents. This includes psycho-physical modelling of perceivedwhiteness frommeasurable light reflectance properties, and physical modelling of light scattering and fluorescence from the paper composition. Existing models are first tested and improvements...

The field of whiteness studies is relatively young compared to other well-established disciplines, including critical race theory. On its trajectory to carve out a new academic niche, whiteness studies is challenged with, and must therefore negotiate, a wide range of criticisms intended to dismantle the enterprise. This synthesis paper inspects the literature on whiteness as an analytical conce...

The aim of this study was to evaluate the effect of bleaching on the flexural strength of bovine dentin, using bleaching agents containing calcium (Whiteness HP Blue and Whiteness Class) and not containing calcium (Whiteness HP and Whiteness Perfect). Sixty bovine incisor tooth slices were obtained and divided into fve experimental groups (n = 12), such as G1, untreated control group; G2, White...

The aim of this study was to assess the effect of bleaching agents (10% and 16% carbamide peroxide) on the roughness of two dental ceramics in vitro, and to analyze the surface by scanning electronic microscopy (SEM). Two bleaching agents (10% and 16%/Whiteness, FGM Gel) and two microparticle feldspathic ceramics (Vita VM7 and Vita VM13) were used. Forty disks of Vita VM7 and Vita VM13 ceramic ...

whitening as one of the stages in rice processing is performed following dehusking. studies on performance of milling machines prevailent in mazandaran province, as the biggest rice producer province in iran, are essential and helpful in reducing rice losses. a research was undertaken to examine the effects of variety (tarom, hibrid, and fajr), milling machine (frictional and abrasive baed mill...

The colored appearances of animals are controlled by pigmentation, highly periodic ultrastructure, or a combination of both. Whiteness, however, is less common and is generated by neither of these, because it requires scattering processes appropriate for all visible wavelengths. We report whiteness resulting from a three-dimensional photonic solid in the scales of Cyphochilus spp. beetles. Thei...