In this study, oxidative discoloration of Basic blue3 (B.B3) and Disperse blue56 (D.B56) dyes in synthetic textile wastewater has been studied using Fenton (Fe2+/H2 O2 ) process. The Fenton’s technique showed satisfactory color removal efficiency. The operating parameters such as concentration of Fe2+, dose of H2 O2 , initial concentration of dye, time contact, initial volume of wastewater that...

The design of the optimal codebook for a given codebook size and input source is a challenging puzzle that remains to be solved. The key problem in optimal codebook design is how to construct a set of codevectors efficiently to minimize the average distortion. A minimax criterion of minimizing the maximum partial distortion is introduced in this paper. Based on the partial distortion theorem, i...

In this paper, partial feedback schemes for a multiple input multiple output orthogonal frequency division multiple access system using a random beamforming are analyzed and optimized. For partial feedback schemes, the partial channel quality indicator feedback schemes and the partial channel quality rank indicator feedback schemes are considered. For these schemes, we first derive the effectiv...

Program specialisation aims at improving the overall performance of programs by performing source to source transformations. A common approach within functional and logic programming, known respectively as partial evaluation and partial deduction, is to exploit partial knowledge about the input. It is achieved through a well-automated application of parts of the Burstall-Darlington unfold/fold ...

Recently, web service is growing more and more popular. Java is a representative language to implement web based services. But its platform independency slows its running speed. Partial evaluation can be used to improve Java bytecode efficiency. In this paper, we present a distributed Java bytecode partial evaluation architecture to accelerate Java based web service running speed by optimizing ...

In this paper, we apply the Variational iteration method and homotopy perturbation method for solving linear and nonlinear partial integro-differential equation (PIDE). The efficiency and accuracy of the methods is validated by its application to several distinct test problems which have exact solutions. The results of applying these methods show the simplicity and efficiency of these methods.

-Using the He’s variational iteration method, it is possible to find the exact solutions or better approximate solutions of the partial differential equations. In this method, a correction functional is constructed by a general Lagrange multiplier, which can be identified via variational theory. In this paper, this method is used for solving a nonlinear partial differential equation, a three-di...

An expander is employed to replace a throttling valve in a heat pump system of the convention order to further improve the efficiency of the system by recovering partial expansion work to dec consume of the system. Due to large expansion ratios of conventional refrigerants, a tw one-stage expand total losses, which are th efficiency efficiently.

The problem of separating the liquid components which have been recovered from natural gas is discussed. Opportunities for improved efficiency using distributed distillation, recycle coupling, heat pumping, and partial effect distillation are presented. Emphasis is placed upon energy efficiency with potential savings in capital costs as applied to heat driven processes.