Abstract In this study, the silver extraction potential from waste x-ray films using sodium hydroxide and nitric acid was studied. Sodium of different concentrations were used as stripping solutions to determine optimum leaching concentration. Optimum time temperature also investigated by varying temperatures, respectively. The stripped analysed for concentration Flame Atomic Absorption Spectro...

objective : application of sodium ascorbate as an antioxidant and calcium hydroxide as a buffering agent following intracoronal bleaching has been recommended. the aim of this study was to investigate the effect of using the mentioned materials on shear bond strength of composite resin to the bleached dentin. materials and methods: in this in vitro investigation, sixty human sound premolars wer...

OBJECTIVES To find a suitable method for detecting zinc sulfate in adulterated urine. METHODS Two rapid spot tests to detect the presence of zinc sulfate in urine were developed. RESULTS Addition of 3 to 4 drops of 1N sodium hydroxide solution to approximately 1 mL of urine containing zinc sulfate led to the formation of a white precipitate, which was soluble in excess sodium hydroxide. In ...

Cotton hanks were dyed with three different sulphur dyes using non-sulphide reducing agents such as glucose, fructose, invert sugar and molasses. The alkalies employed for reduction were sodium carbonate and sodium hydroxide. Invert sugar as a reducing agent and sodium carbonate as alkali proved to be better as this combination gave results comparable to those obtained with the conventional sod...

DESCRIPTION A 75-year-old, previously healthy, woman presented to the emergency room with bilateral hand wounds. Her medical history revealed the use of a sodium hydroxide (NaOH)—impregnated swab without gloves for approximately 2–3 h. Within several hours she felt a burning sensation and noticed significant hyperaemia and blisters over her left interdigitals and her right tenar eminence and fi...

The purpose of this study was to evaluate the surface tension of calcium hydroxide (CH) associated with different substances (deionized distilled water, camphorated paramonochlorophenol, 2% chlorhexidine digluconate, Otosporin, 3% sodium lauryl ether sulphate; Furacin, PMC Furacin) using tensiometer. The action of the substances studied on the dentinal structure enhances the property of surface...