a facile co-precipitation method for the synthesis of well-dispersed ndfeo3 nanocrystals is developed in the presence of octanoic acid as surfactant. co-precipitation can produce fine, high-purity, stoichiometric particles of single and multicomponent metal oxides. the product is characterized by fourier transform infrared spectroscopy (ft-ir), x-ray diffraction (xrd), scanning electron microsc...

numerical modeling of machining processes is of significance in the parametric analysis and optimization of their performance. in this paper, a finite element-based model of abrasive waterjet (awj) cutting of a ductile material is presented with the help of an explicit, nonlinear finite element method. in this model, both solid-solid interaction and fluid-structure interaction are considered. t...

It is shown that electrons and photons can be considered as composities of particles belonging to the fundamental representations of the extended Lorentz group SU(3) ⊗ SU(3) in (8+1) dimensional space-time which are held together by force mediated by gauge particles belonging to the regular representation of this group. In this theory, spin states of electron, positron and photon form a 8⊗8 rep...

http://dx.doi.org/10.1016/j.jhydrol.2015.12.007 0022-1694/ 2015 Elsevier B.V. All rights reserved. ⇑ Corresponding author. Tel.: +1 713 348 2113; fax: +1 713 348 5214. E-mail address: [email protected] (Z. Liu). 1 Present address: Environmental Program, Colorado College, Colorado Springs, CO, United States. 2 Present address: Rm. 3307, French Family Science Center, Duke University, NC, United State...