Abstract Fly ash as residue from coal combustion has potential for environmental applications an adsorbent water pollution treatment. Adsorption performance of fly depends on origin and chemical Modification by the treatment could increase adsorption capacity. In this paper, was alkali modified with NaOH solution at various concentrations (2 N, 4 6 10 N) a temperature 60 °C. The physical proper...

the development of the dynamical core of a potential-vorticity-based atmospheric general circulation model is explored. there are some advantages of using potential vorticity (pv) as a prognostic variable in that the resulting model can give more accurate simulation of the evolution of pv, as arguably the most fundamental dynamical quantity. further, there is possibility of explicit representat...

In this article, analysis has been executed to find the impact of radiation, varied thermal conductivity and viscosity on steady 2 dimensional flows nanoparticles existing Maxwell fluid past a flat surface that can be stretched. The partial differential equations which govern flow are modified by using similarity transformations in order form ordinary equations. Employing bvp4c MATLAB software ...

rice bran is a major by-product of the rice milling process that contains high amounts of fiber, proteins, fats, vitamins, minerals as well as antioxidants and hence can be utilized in enriching food products. the main aim followed in this study was to determine the effects of rice bran of variable particle sizes (53, 125 and 210 µm) and its quantity (0, 5, 10, 15 and 20%) on the quality of bat...

this paper presents a survey on soil pb concentration around sepahanshahr town located in vicinity of isfahan. due to the lack of regulation and environmental education and awareness, sepahanshahr is now a rapid growing residential area suffering from the considerable consequences of poorly regulated mining activities operating in its vicinity. the aim of this study is to explore the spatial st...

In this paper, we examine optical ow methods applicable under variable brightness conditions. In particular, we develop a stochastic formulation of Gennert and Negah-daripour's optical ow algorithm. Our model is shown to be well-posed and thus can be used in both simulating and estimating velocity elds with certain known stochastic properties. This model is used to simulate ow elds of diier-ent...