INTRODUCTION The open-sandwich technique was proposed to solve the problem of cervical micro-leakage of deep Class II composite restorations by making use of the self-adhesive nature of the glass-ionomers. Recent advances in the properties of this family of materials may continue to make the technique relevant today. AIMS AND OBJECTIVES The aim of this in vitro study was to determine the effe...

Strains of Brucella melitensis biovars 1, 2, and 3 isolated in India, Italy, Kuwait, Saudi Arabia, the Federal Republic of Germany, and Zimbabwe were inhibited by thionin (20 micrograms/ml) but not by basic fuchsin (20 micrograms/ml) or safranin O (200 micrograms/ml). In other respects the strains were typical of their species and biovars. The existence of dye-sensitive strains of B. melitensis...

In this paper, we present a brief anatomical description of the torus longitudinalis and the valvula cerebelli in a percomorph fish, the gilthead seabream (Sparus aurata) based on the analysis of serial brain sections stained by paraldehyde fuchsin, Groat's hematoxylin-picroindigocarmin and cresyl violet. The existence of a small undescribed fiber tract directly bridging the ventral torus longi...

This study compares the performance of simulated shallow ponds vegetated with Lemna minor L. under controlled and semi-natural conditions for the treatment of simulated wastewater containing textile dyes. The objectives were to assess the water quality outflow parameters, the potential of L. minor concerning the removal of chemical oxygen demand (COD) and four azo dyes (Acid blue 113, reactive ...

ANALYTICAL METHOD FOR DETERMINATION OF AURAMINE DYES IN ECOTOXICITY TESTS AND SURFACE WATERS. Dyes can be considered important environmental contaminants. Auramine dyes, known commercially as Solvent Yellow 34 and Basic 2, are used in several industrial products, including textile paper. In this study, an analytical method was developed validated using Liquid-Liquid Extraction High-Performance ...

The effect of hydrogen-ion concentration on the toxicity of various organic and inorganic compounds has been studied by a number of investigators. In general the results have shown that the toxicity of anions is increased by increasing the hydrogen-ion concentration and that of cations is increased by decreasing the hydrogen-ion concentration, provided the reaction does not affect the solubilit...

The effect of acid treatment on the adsorptive capacity a Brazilian palygorskite to remove crystal violet (CV) and congo red (CR) dyes was investigated. raw acid-treated by different HCl solutions (2, 4, 6 mol/L). modifications structure were investigated using X-ray diffraction, fluorescence, Fourier-transform infrared spectroscopy, N2 adsorption/desorption, thermogravimetric differential ther...