Many paintings require visual compensation for losses in their paint film, and for many conservators the goal is to treat these losses so they are indistinguishable from the surrounding undamaged surface when viewed under typical museum conditions. In order to achieve this level of reintegration, the inpainted area should have nearly identical optical properties. Specifically, there should be c...

Optical characterization and appearance prediction of translucent materials is needed in several fields engineering such as computer graphics, dental restorations or 3D printing technologies. In the case strongly diffusing materials, flux transfer models like Kubelka-Munk model (2-flux) 4-flux have been successfully used to this aim for decades. However, they lead inaccurate color variations ob...

The aim of this work is to synthesis CuO nanoparticles and investigates their eminent properties identify diverse application capability in the field solar cells. In work, were synthesized by precipitation method using Copper (II) nitrate chloride. Surface effects due defects, structural related through lattice parameter, crystallite sizes have been identified from XRD. crystal plane reflection...

The powders of Ca1–2xBi2xMo1–xGexO4 solid solutions weresynthesized by the conventional state method and investigated X–ray powder diffraction Raman spectroscopy. compositions crystallize in scheelite structure (sp. gr. I41/a) at 0 x 0.4, but traces bismuth germanates are detected scanning electron microscopy. = 0.5 composition contains several phases with BiVO4- type structures. spectroscopy d...

The photocatalytic proprieties of TiO2/FeO3 and TiO2/WO3 nanocomposites have been investigated using methylene blue as a pollutant. We propose non-conventional approach for material preparation, i.e., the Doctor Blade technique, which is an easy inexpensive method coating materials. Several drawbacks related to use powders can be alleviated by solid substrates, this deposition allows us take ad...

In the present work, a thermal treatment technique is applied for synthesis of CexSn1?xO2 nanoparticles. Using this method has developed understanding how lower and higher precursor values affect morphology, structure, optical properties nanoparticle involves reaction between cerium tin sources, namely, nitrate hexahydrate (II) chloride dihydrate, respectively, capping agent, polyvinylpyrrolido...

The gadolinium substituted nickel-zinc ferrite nanoparticles of the composition, Ni0.5Zn0.5Gd0.05Fe1.95O4 were prepared using sol-gel method. In order to study effect calcination temperature on optical parameters, powder was divided into five parts. first part taken as as-prepared sample and remaining four parts calcinated at different temperatures, 600°C, 700°C, 800°C & 900°C. X-ray diffractio...

Anatase TiO2 nanocrystallines (17–29 nm) were successfully synthesized by the metal–organic chemical vapor deposition method (MOCVD). Moderate manipulation of system parameters of MOCVD can control the particle size. The electro-optical and photocatalytic properties of the synthesized TiO2 nanoparticles were studied along with several commercially available ultra-fine TiO2 particles (e.g., 3.8–...

A simulation model of light partitioning in horizontally homogeneous multispecies canopies is proposed. The model is based on the Kubelka–Munk equations (KM) applied to a mixture of N vegetation components. Only two hemispherical fluxes, i.e. downwards and upwards, are considered. The exact solution of KM equations was then simplified in such a way that the model can be easily extended to multi...