Pathogens in low water activity foods are an important emerging food safety concern due to notable survival and thermotolerance. Limited but growing data publicly available compare the thermotolerance of Listeria monocytogenes, Salmonella spp., Enterococcus faecium NRRL B-2354 (a surrogate). The aims this study were determine assess bacterial thermal inactivation rates two pathogens a well-esta...

In the molecule of the the title compound, [Fe(C5H5)(C28H22F6N2PS)], the absolute configuration is R C ,SFe . The dihedral angle between the trifluoro-methyl-substituted phenyl ring and the thio-urea plane is 41.8 (9)°. The iron atom is bound to the cyclo-penta-dienyl rings in the typical η(5)-manner in a close to eclipsed conformation. The crystal structure features N-H⋯S hydrogen bonds, with ...

Color constancy denotes the phenomenon that the appearance of an object remains fairly stable under changes in illumination and background color. Most of what we know about color constancy comes from experiments using flat, matte surfaces placed on a single plane under diffuse illumination simulated on a computer monitor. Here we investigate whether material properties (glossiness and roughness...

In the title compound, C18H20Cl2N2O2S, the piperazine ring adopts a chair conformation. The dihedral angle between the sulfonyl-bound benzene ring and the best-fit plane through the six non-H atoms of the piperazine ring is 72.22 (12)°; those between the di-chloro-benzene ring and the sulfonyl and piperazine rings are 2.44 (13) and 74.16 (2)°, respectively. In the crystal, mol-ecules are connec...

UNLABELLED For spectral and nonspectral aperture color 3 s stimuli, Bezold-Brucke (B-B) hue-shift was measured for one to six subjects for four functions: (1) luminance (L) level from 0.1:1.0 through 100:1000 cd/m2; (2) L ratio from 1:2 through 1:1000; (3) illuminant color temperature (for seven illuminants including A and D65) by two adaptation methods; and (4) interstimulus interval from 0 th...

Machine vision has been recently utilized for quality control of food and agricultural products, which was traditionally done by manual inspection. The present study was an attempt for automatic defect detection and sorting of some single-color fruits such as banana and plum. Fruit images were captured using a color digital camera with capturing direction of zero degree and under illuminant D65...

Device independent color requires that all color imaging devices “speak” in CIE colorimetric terms. A color image scanner is one component of the desktop color imaging chain that needs to be colorimetric if color is to be device independent. Most commercial color scanners are not colorimetric. Instead, they are built as color densitometers, emulating commercial graphic arts scanners. There are ...

We estimated the number of colors perceived by color normal and color-deficient observers when looking at the theoretic limits of object-color stimuli. These limits, the optimal color stimuli, were computed for a color normal observer and CIE standard illuminant D65, and the resultant colors were expressed in the CIELAB and DIN99d color spaces. The corresponding color volumes for abnormal color...

We propose a method for hiding patterns within printed images by making use of classical and of two daylight fluorescent magenta and yellow inks. Under the D65 illuminant we establish in the CIELAB space the gamut of a classical cmyk printer and the gamut of the same printer using a combination of classical inks with daylight fluorescent inks. These gamuts show that a significant part of the cl...

PURPOSE The aim of this study was to evaluate the effect of polishing and glazing on the color and spectral distribution of monolithic zirconia. MATERIALS AND METHODS Forty-five monolithic zirconia specimens (16.3 mm × 16.4 mm × 2.0 mm) were fabricated and divided into 5 groups according to the number of A2-coloring liquid applications (Group I to V). Each group was divided into 3 subgroups a...