The aim of this in vitro study was to compare the color stability of commercially available porcelain, reinforced acrylic, and conventional acrylic denture teeth materials used in removable prostheses. Two brands of porcelain (Unilux-Enta Lactona-Holland and Vivoperl-Ivoclar-Liechtenstein), 2 brands of reinforced acrylic (Optodent-Bayer-Germany and Ivolek-Ivoclar-Liechtenstein), and 2 brands of...

Our approach deals with a modeling of the local spatial distributions of the variations of color. It is an extension to color textures of the Neighbouring Gray Level Dependence Matrices (NGLDM) introduced by Sun et al. [1] and completed by Berry et al. [2]. To our knowledge, this is the first time that this extension has been proposed. We will name these matrices NCDM: Neighbouring Color Depend...

Synesthesia is a condition where presentation of one perceptual class consistently evokes additional experiences in different perceptual categories. Synesthesia is widely considered a congenital condition, although an alternative view is that it is underpinned by repeated exposure to combined perceptual features at key developmental stages. Here we explore the potential for repeated associative...

Nanofiltration (NF) has become a widely accepted process not only for producing drinking water but also for recovering wastewater in industrial processes or removing pollutants from industrial wastewater effluent. In the textile industry, the treatment of various dye baths with NF at room temperature have already been studied and was found feasible at lab-scale and pilot scale. The aim of this ...

ozonation was carried out for decolorization and coD removal of raw and anaerobically treated uAsb (upflow anaerobic sludge blanket) combined industrial (mainly textile) effluent in a lab-scale bubble column reactor. ozonation of anaerobic bioprocess effluent at a dose of 300 mg/h for 10 min resulted in 81% color and 75% coD removal (100 mgo3/80 mg coD) while for raw wastewater 25 min ozonation...

Segmentation based on color, instead of intensity only, provides an easier distinction between materials, on the condition that robustness against irrelevant parameters is achieved, such as illumination source, shadows, geometry and camera sensitivities. Modeling the physical process of the image formation provides insight into the effect of different parameters on object color. In this paper, ...

The dose effect of the addition of natural antioxidants (tea, chestnut, grape seed and beer extracts) on physicochemical, microbiological changes and on oxidative stability of dry-cured "chorizo", as well as their effect during the storage under vacuum conditions was evaluated. Color parameters were significantly (p < 0.05) affected by the addition of antioxidants so that samples that contained...

Color changes were tested and compared for heat-treated Paulownia tomentosa Pinus koraiensis wood treated with hot oil or air further utilization of these species. Hot treatments conducted at 180, 200, 220 °C 1, 2, 3 h. Heat-treated color determined using the CIE-Lab system. Weight before after heat treatment also determined. The weight increased considerably but it decreased in wood. samples s...

A Color Matching Method (CMM), also called a Color Engine, is a software component that does the color conversion calculations from one device's color space to another. This paper discuses a new working mode for CMMs that allows such software components to operate in a way that is not restricted by the gamut of the device encoding, the gamut of the profile connection space or any intermediate s...