Demidoff ’s villa San Donato near Florence, in the middle of 19th century, was one most interesting phenomena European artistic life. The richest collection, acquired by two generations family and opened for choice public at end 1850s, attractive not only curious tourist also specialists history art. This collection gives his influence collecting second half century total liquidation 1860s–1880...

The late prehistoric copper production site of the Vilabouly Complex in central Laos delivered different types materials that seem to be related chaine oppératoire for two main sites, Puen Baolo and Thong Na Nguak: minerals, slags crucible fragments. A selection these artefacts were analyzed (OM, SEM–EDS, XRD, bulk analyses) study extraction techniques, raw used steps at Vilabouly. various anal...

In the present study, a Cameroonian smectite was used as an adsorbent to model adsorption kinetics of three textile dyes (malachite green, methyl red and acid blue 74) from aqueous solution in batch system. The effects pH temperature were evaluated on capacities, times required reach equilibrium mechanisms involved. It can be seen that, although are independent medium, process studied is favour...

Abstract The present work reports the investigation performed by comparing adsorption abilities of modified/grafted polymethacrylic acid (PMAA) functionalized with dihydroxy benzene like catechol (CAT) and catechol-hydroquinone (CAT-HQ) an oxidative decarboxylation method using potassium dichromate as oxidant to absorb Malachite green (MG) dye from aqueous solution through batch experiments. pe...

The classical malachite green (MLG) assay of phosphate, which added MLG after molybdate to the acidified reaction solutions of phosphate, tolerated interference from papaverine, sildenafil, and some similar hydrophobic amines. Resonance Rayleigh scattering signals, the alleviation of interference by poly(vinyl alcohol), and the precipitation of some yellow complexes supported that the irreversi...

We evaluated bronopol as a practical alternative anti-fungal agent to malachite green for use in hatcheries. Repeated exposure everyday, just after fertilization to the stage of eggs showing eye development to 50 mg/L and 100 mg/L bronopol for 30 min showed an efficacy comparable to 0 mg/L (control) for the inhibition of fungal infection in rainbow trout (Oncorhynchus mykiss) eggs. The 100 mg/L...

This paper presents the feasibility of removal of basic dye malachite green from aqueous solutions by using a low cost AC-MnO2-NC. Batch adsorption experiments were carried out as a function of pH, contact time, initial concentration of the adsorbate, adsorbent dosage and temperature . Langmuir, Freundlich and Tempkin isotherms were also studied . Pseudo first order, Pseudo second order , intra...

Wavelength-tunable pulses from a synchronously pumped cavity-dumped dye laser were compressed by using an optical fiber. The resulting 250-fs pulses were used to study ground-state recovery in malachite green solutions. The coherent coupling artifact was removed from the data by an antisymmetrizing procedure, and the resultant signals were deconvoluted in the usual manner. The ground-state reco...

A simple and highly sensitive method is proposed for determination of trace amount of cerium. New method involves bleaching of greenish colour dye-malachite green, by the action of iodine, which is released by reaction between potassium iodide and cerium (IV) in acidic medium. Beer’s law is obeyed over concentration range of 0.6 to 4.6 μg cerium (IV) in final volume of 25 ml (0.024-0.184 ppm). ...