The fluidization and reduction behavior of micron-sized iron oxide powder, produced by combustion, is studied in a lab-scale cylindrical fluidized bed. minimum velocity umf found to stabilize above normalized static bed heights 0.5 H/D (static height divided the diameter). measured as function temperature between 280 860 K for both H2 N2 fluidizing gas. experimental results start deviate from E...

Fixed bed reactors play an important role in converting solid wastes to high-quality products. The wastes, as well the corresponding catalysts, are often made into cylindrical particles. However, research on drag force for particles is still rarely reported. In this work, fixed porosity was firstly predicted with unresolved CFD-DEM method and validated against experimental data. Then, Ergun mod...

Ecotourism is a promising solution for channeling tourism revenues to promote nature conservation and poverty alleviation. However, vulnerable social-ecological conditions may limit the effects of ecotourism in dry rangelands around world. This study implemented paired experimental design survey impacts Ergun grassland, one China’s most commended regions. Compared with livestock feeding busines...

Aalto University, P.O. Box 11000, FI-00076 Aalto www.aalto.fi Author Kaarlo Nieminen Name of the doctoral dissertation Towards a comprehensive model for cooking processes Publisher School of Chemical Technology Unit Forest Products Technology Series Aalto University publication series DOCTORAL DISSERTATIONS 225/2015 Field of research Chemical Pulping Technology Manuscript submitted 23 September...

Large amplitude parallel propagating electric field structures of nonlinear electron-acoustic waves are examined in an unmagnetized magnetosheath plasma. Based on the observations and simulations by Ergun et al. (2016), plasma side ion diffusion layer is modeled a 3-component adiabatic fluid dynamic consisting cold magnetospheric (MSP) electrons, background ions. Using Sagdeev pseudopotential t...

The concentrations of heavy metals (As, Cd, Cr, Cu, Hg, Ni, Pb and Zn) in 17 surface sediment samples from the Hailar River, upper source Ergun which is boundary river between China Russia, were analyzed. Traceability cause analysis carried out by correlation principal component analysis. results showed that Hg Cd sediments exceeded soil background values. Due to high biological toxicity factor...

Abstract Transnational feminist translation studies stand for activism, cooperation and solidarity in connecting thinking developed all parts of the world (Alvarez et al. 2014, Castro/Ergun 2017, Flotow/ Farahzad Flotow 2019). One important issues is wartime sexual violence, which focus this article, constitutes a feminist, transnational phenomenon. The account violence by female victims faces ...

conclusions results indicated that annular fluidized bed reactor’s adsorbers are useful techniques for vocs adsorption. comparison of two particle ranges indicates that in all concentrations and all flow rates of the experiments, smaller particle size adsorption are better. in superficial velocity above the minimum fluidization velocity, pressure drop of fluidized beds are less than the pressur...