Amberlite XAD-4 was covalently linked with octa-O-methoxy resorcin[4]arene through N=Nto form chelating resin, which has been duly characterized and successfully used for separation and preconcentration of rareearth metal ions like U(VI), Th(IV), La(III) and Ce(III). Various physiochemical parameters like pH, flow rate, sorption capacity, breakthrough studies, distribution coefficient, preconce...

The applicability of Origanum majorana-Capped Silver nanoparticles synthesis for removing Ni (II) ions from aqueous solutions has been reported. This novel material was characterized by different techniques such as FT-IR, XRD and SEM. The influence of nanoparticle dosage, pH of the sample solution, individual ions concentration, temperature, contact time between the sample and the adsorbent wer...

In this paper, we propose a varying coefficient panel data model with unobservable multiple interactive fixed effects that are correlated the regressors. We approximate each function by B-spline, and robust nonlinear iteration scheme based on least squares method to estimate functions of interest. also establish asymptotic theory resulting estimators under certain regularity assumptions, includ...

The role of diffusion in chemical pattern formation has been widely studied due to the great diversity of patterns emerging in reaction-diffusion systems, particularly in H+-autocatalytic reactions where hydrogels are applied to avoid convection. A custom-made conductometric cell is designed to measure the effective diffusion coefficient of a pair of strong electrolytes containing sodium ions o...

This study presents a thermal model, derived from first principles, for electric double layer capacitors (EDLCs) with multiple ion species and/or asymmetric electrolytes. It accounts for both irreversible and reversible heat generation rates resulting from the transient electrodiffusion of ions within the electrolyte. Detailed numerical simulations of EDLCs with planar electrodes and binary and...

Various aspects of multihadron production can be revealed through multiplicity fluctuations and particle correlations studies. The fluctuations are sensitive to soft particle dynamics and their measurements allow to test perturbative QCD 1 and local parton hadron duality (LPHD) hypothesis . In BEC studies , the correlation function gives information about the shape, size and lifetime of the bos...

We leverage proof techniques from discrete Fourier analysis and an existing result in coding theory to derive new bounds for the problem of non-interactive simulation binary random variables. Previous literature were derived by applying data processing inequalities concerning maximal correlation or hypercontractivity. show that our are sharp some regimes. Indeed, a specific instance parameters,...