background to achive natural and harmonic restoration color, shade matching is a commonly used method in dental practice using shade guides. to prevent infection,shade guides are required to be disinfected .using of disinfection solutions gradually affect the color of dental equipment. the aim of this study was to evaluate the effect of three disinfectants sodium hypochlorite solution 5/25%, de...

A spectral-based imaging system was constructed consisting of a two-sequential-absorption-filter-CFA digital camera and a seven-color inkjet printer and used to image and print a post-impressionist style painting such that matches were generated for CIE Illuminants D65 and A. Camera calibration was learning based using the Matrix R method. Rendered images for both illuminants were inputted to a...

The quality of beef products relies on the presence a cherry red color, as any deviation toward brownish tones indicates loss in quality. Existing studies typically analyze individual color channels separately, establishing acceptable ranges. In contrast, our proposed approach involves conducting multivariate analysis changes using white-box machine learning techniques. Our proposal encompasses...

The optical and mechanical properties of paper sheets were compared following treatment with biopolymers using two different methods, i.e., internal functionalization surface modification. Industrial chemi-mechanical pulp was provided, groups handsheets made. first group sheet samples prepared incorporated chitosan in a mixed-in-pulp slurry (at three levels, 0%, 1%, 2%), the second group, untre...

Spectral imaging can provide spectral information from which spectral radiance or reflectance can be recovered at each image pixel. Recovery algorithms lead to good spectral and colorimetric performance by directly transforming RGB digital counts to spectral reflectances, but his approach is sensitive to the size and composition of the training set. What we propose here is a supervised method t...

The colour and the sweetness of honey are main characteristics refers by consumers when buying for their consumption. Consumers always believe that darker sweeter taste, better quality honey. This study aims to investigate correlation lightness stingless bee with its mineral contents. Honey samples were collected from seven beehives around Terengganu, Malaysia. All have different colours tastes...

Sodium bicarbonate is sometimes used to aid in the extraction of total polyphenols. Its main effect increase pH solution. Raising can cause changes chemical structure This lead variations their biological properties, solubility and stability. work studied sodium carbonate on by aqueous decoction polyphenols from leaves Combretum micranthum. The content phenolic compounds extracts was estimated ...

............................................................................................................................................................... iv Introduction.......................................................................................................................................................... iv 1 Scope ...........................................................