Metal contamination is one of the most serious global problems. This investigation deals with use Aksaray pumice for adsorption cobalt ions. The factors affecting on were examined. Pumice activated at 873 K two hours before contact UV-Vis spectrophotometer was used to measure ions concentrations. response surface methodology utilized evolve predictive model pumice. experimental and predicted ma...

In this research, the effect of the cement, sand, and pumice mixture on the durability of lightweight concrete is investigated. The intention of this paper is to replace a certain amount of the pumice percentage as an alternative option of the cement and pumice sand aggregate with conventional sand components. The experimental results include compressive strength, ion-chloride emission factor (...

STATEMENT OF THE PROBLEM Demineralization of enamel adjacent to orthodontic appliances frequently occurs, commonly due to insufficient oral hygiene. PURPOSE The aim of this study was to compare two microabrasion techniques on improving the white spot lesions as well as subsequent enamel discoloration. MATERIALS AND METHOD Sixty extracted premolar teeth without caries and hypoplasia were sel...

Kedungpedaringan is a village that included in the Kepanjen sub-district, Malang Regency, with area of about 2 km2 . The lack groundwater availability can be used for residents around this and development tourist villages encourages research. Investigation aquifers containing has been carried out using geoelectric method Schlumberger configuration. Three datum points were acquired to West Brant...

PURPOSE To compare various pre-treatments serving as cleaning procedures of dentin on the bond strength of resin composite promoted by a universal adhesive system applied either in the absence or presence of simulated pulpal pressure. MATERIALS AND METHODS Prior to application of the adhesive system (Scotchbond Universal) and resin composite (Filtek Z250), ground dentin surfaces were given on...