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Sheshpoli Mohamad Alijanpour Ajarostaghi Seyed Soheil Mousavi Delavar Mojtaba Aghajani 《Journal of Thermal Analysis and Calorimetry》2019,135(3):1699-1712
Journal of Thermal Analysis and Calorimetry - According to day-by-day consumption increase, energy high costs and nonrenewable energy destroying effects, clean technologies such as fuel cells lead... 相似文献
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Nemati Chelavi Azadeh Zare-Shahabadi Vahid Sayyahi Soheil Anaraki-Ardakani Hossein 《Research on Chemical Intermediates》2020,46(1):445-458
Research on Chemical Intermediates - In this study, the transfer hydrogenation reduction of acetophenone using supported nickel on MOF as catalyst was investigated. BBD and RSM were employed to... 相似文献
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The catalytic activity of β‐cyclodextrin immobilized on Dowex resin as an efficient solid‐liquid phase transfer catalyst was developed for the synthesis of alkyl thiocyanates and phenacyl derivatives in water. The nucleophilic substitution reactions were performed under mild reaction condition and gave the products in excellent yields. Furthermore, the catalyst could be recycled by facile separation without any loss of activity. 相似文献
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The Local Radial Basis Function-Differential Quadrature (RBF-DQ) method is applied to two-dimensional incompressible Navier-Stokes
equations in primitive form. Numerical results of heatlines and entropy generation due to heat transfer and fluid friction
have been obtained for laminar natural convection. The variations of the entropy generation for different Rayleigh numbers
are also investigated. Comparison between the present results and previous works demonstrated excellent agreements which verify
the accuracy and flexibility of the method in simulating the fluid mechanics and heat transfer problems. 相似文献
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Dynamic price competition with discrete customer choices 总被引:1,自引:0,他引:1
For many years, dynamic pricing has proven to be an effective tool to increase revenue in the airline and other service industries. Most studies, however, focused on monopolistic models and ignored the fact that nowadays consumers can easily compare prices on the Internet. In this paper, we develop a game-theoretic model to describe real-time dynamic price competition between firms that sell substitutable products. By assuming the real-time inventory levels of all firms are public information, we show the existence of Nash equilibrium. We then discuss how a firm can adapt if it knows only the initial – but not the real-time – inventory levels of its competitors. We compare a firm’s expected revenue under different information structures through numerical experiments. 相似文献
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The Caputo–Fabrizio time-fractional Sharma–Tasso–Olver–Burgers equation and its valid approximations
Kamyar Hosseini Mousa Ilie Mohammad Mirzazadeh Dumitru Baleanu Choonkil Park Soheil Salahshour 《理论物理通讯》2022,74(7):75003
Studying the dynamics of solitons in nonlinear time-fractional partial differential equations has received substantial attention, in the last decades. The main aim of the current investigation is to consider the time-fractional Sharma–Tasso–Olver–Burgers (STOB) equation in the Caputo–Fabrizio (CF) context and obtain its valid approximations through adopting a mixed approach composed of the homotopy analysis method (HAM) and the Laplace transform. The existence and uniqueness of the solution of the time-fractional STOB equation in the CF context are investigated by demonstrating the Lipschitz condition for $\varphi \left(x,t;u\right)$ as the kernel and giving some theorems. To illustrate the CF operator effect on the dynamics of the obtained solitons, several two- and three-dimensional plots are formally considered. It is shown that the mixed approach is capable of producing valid approximations to the time-fractional STOB equation in the CF context. 相似文献
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Hossein Moayedi Sina Kazemian Amir Hossein Vakili Soheil Ghareh Ramli Nazir 《Journal of Dispersion Science and Technology》2014,35(2):273-282
Electroflotation is an unconventional separation process owing its name to the bubbles generation method (i.e., electrolysis of the aqueous medium) caused by the hydrogen and hydroxide development. Collecting the colloidal particles in surface water has been a long-term issue all over the world, because of their adverse influence. In the present research, the electroflocculation technique have been use to collect the humus particles throughout the polluted wastewater. The uses of different chemical additives namely, Al2(SO4)3, Al(OH)3, CaCl2, CaO, and Na2SiO3 were also successfully examined and enhanced the electroflocculation technique. Although high negatively surface electrical charge of humus causes difficulties in the conventional flocculation and coagulation technique, it enhances the flocculation process when the electroflocculation techniques have been used. The results of both Jar test and electroflocculation technique are further compared. It can be concluded that the polluted water were fully decontaminated (i.e., all of the suspended colloids through the water were removed) by using the electroflocculation technique. The removal rate after electroflocculation test were 91.8%, 98%, 93.5%, 85.3%, 95.4%, and 94% for neutral, Al2(SO4)3, Al(OH)3, CaCl2, CaO, and Na2SiO3, respectively. While the removal rate after Jar test were 84.8%, 83.79%, 71.44%, 84.83%, 77.09%, and 77.09% for neutral, Al2(SO4)3, Al(OH)3, CaCl2, CaO, and Na2SiO3, respectively. 相似文献