Consider the hyperbolic system of conservation laws u t + F(u) x = 0. Let u be the unique viscosity solution with initial condition u(0; x) = u(x), and let u " be an approximate solution constructed by the Glimm scheme, corresponding to the mesh sizes x, t = O((x). With a suitable choice of the sampling sequence, we prove the estimate u " (t;) ? u(t;) L 1 = o(1) p x ln((x) :

conclusions according to the high efficiency of cadmium elimination by tea waste, this approach is applicable as an efficient and affordable trend to remove cadmium from aqueous solution without any chemical or physical pre-treatment. background heavy metals pollution is a serious threat to environment and human health. therefore, it is vital to find an effective method to remove heavy metals f...

This paper deals with application of polyaniline coated on wood sawdust for removal ofmethylene blue (MB) dye from aqueous solutions. Polyaniline coated onto sawdust (termedas PAn/SD) was prepared via direct chemical polymerization onto sawdust which waspreviously soaked in the monomer (aniline) solution in acidic (HC1) media. Adsorptionexperiments were carried out using batch system. The effec...

This paper presents an efficient meta-heuristic algorithm for optimization of double-layer scallop domes subjected to earthquake loading. The optimization is performed by a combination of harmony search (HS) and firefly algorithm (FA). This new algorithm is called harmony search firefly algorithm (HSFA). The optimization task is achieved by taking into account geometrical and material nonlinear...

In this study, nanoporous hydroxyapatite was synthesized and functionalized via tetraethylenepentamine in order to obtain a novel adsorbent for efficient removal of Acid Blue 25 dye from aqueous solution. Functionalized hydroxyapatite was characterized by Fourier transform infrared spectroscopy (FTIR), X-Ray Diffraction (XRD), Scanning Electron Microscopy (SEM), Energy Dispersive Spectroscopy (...

In this paper, a moving mesh technique and a non-standard finite difference method are combined, and a moving mesh non-standard finite difference (MMNSFD) method is developed to solve an initial boundary value problem involving a quartic nonlinearity that arises in heat transfer with thermal radiation. In this method, the moving spatial grid is obtained by a simple geometric adaptive algorithm ...

We introduce an overlapping time-domain decomposition for linear initial-value 7 problems which gives rise to an efficient solution method for parallel computers without 8 resorting to the frequency domain. This parallel method exploits the fact that homogeneous 9 initial-value problems can be integrated much faster than inhomogeneous problems by using 10 an efficient Arnoldi approximation for ...

this paper deals with application of polyaniline coated on wood sawdust for removal ofmethylene blue (mb) dye from aqueous solutions. polyaniline coated onto sawdust (termedas pan/sd) was prepared via direct chemical polymerization onto sawdust which waspreviously soaked in the monomer (aniline) solution in acidic (hc1) media. adsorptionexperiments were carried out using batch system. the effec...

We give an algorithm for efficient step size control in numerical integration of non– stiff initial value problems, based on a formula tailormade to methods where the numerical solution is compared with a solution of lower order.