Agarwal introduced $n$-color compositions in 2000 and most subsequent research has focused on restricting which parts are allowed. Here we focus instead allowed colors. After three general results, giving recurrence formulas for the cases of given colors, prohibited colors satisfying modular conditions, consider several more specific establishing direct connections to other combinatorial object...

degradation of acrylic water base color from synthetic wastewater by the fenton process was performed. experiments were conducted on the sample containing 100 and 400 mg/l of acrylic water base color. the study was performed for searching optimum values of feso4 and h2o2 concentration, ph and temperature. the h2o2 requirement seems to be related to initial cod of the sample. feso4/ h2o2 ratios ...

degradation of acrylic water base color from synthetic wastewater by the fenton process was performed. experiments were conducted on the sample containing 100 and 400 mg/l of acrylic water base color. the study was performed for searching optimum values of feso4 and h2o2 concentration, ph and temperature. the h2o2 requirement seems to be related to initial cod of the sample. feso4/ h2o2 ratios ...

objective: bulk-fill composites are a group of composite resins designed for easy and fast filling of large cavities. this study aimed to assess the color stability of bulk-fill composites subjected to xenon radiation and evaluate their color change (&deltae;) following polymerization. methods: in this in vitro experimental study, 30 specimens (4mm in height and 8mm in diameter) were fabricated...