The objective of this work was to apply a hybrid process, including electrodialysis reversal (EDR) and reverse osmosis (RO) to the treatment of petrochemical wastewater in order to obtain process water for reuse. A water balance was carried out to defne the main water consumers and the process step that could receive the produced water. Additionally, toxicity assays wer...

In the previous lecture we proved the Kronecker-Weber theorem: every abelian extension L of Q lies in a cyclotomic extension Q(ζm)/Q. The isomorphism Gal(Q(ζm)/Q) ' (Z/mZ)× allows us to view Gal(L/Q) as a quotient of (Z/mZ)×. Conversely, for each quotient H of (Z/mZ)×, there is a subfield L of Q(ζm) for which H ' Gal(L/Q). We now want make the correspondence between H and L explicit, and then g...

let $a$ be an abelian topological group and $b$ a trivial topological $a$-module. in this paper we define the second bilinear cohomology with a trivial coefficient. we show that every abelian group can be embedded in a central extension of abelian groups with bilinear cocycle. also we show that in the category of locally compact abelian groups a central extension with a continuous section can b...

the salient, and often ignored, role that out-of-class learning plays in second/foreign language (l2) learners’ development is overshadowed by classroom research. the main aim of this study is to problematize the role of out-of-class learning in the specific english-as-foreign-language (efl) context of iran by examination of the ways in which four learners attempted to revamp their english lang...

today in multilingual contexts, many parents prefer to rear their children in the dominant language rather than in their mother tongue. this phenomenon is widespread among native speakers of kalhuri dialect of the kurdish language in the multilingual context of iran, too. nevertheless, some studies have evidenced the privilege of bilinguals in learning an additional language though some others ...

in this paper, we considered composition operators on weighted hilbert spaces of analytic functions and  observed that a formula for the  essential norm, gives a hilbert-schmidt characterization and characterizes the membership in schatten-class for these operators. also, closed range composition operators  are investigated.

we present the basic results on the representation theory of the alternating groups. our approach is based on clifford theory.

abstractmodernism and social class both are categories rose up from the west capitalism system and create somechallenges for the society. the aim of this discussion is explaining the conflict between tradition andmodernism based on one of the main conflict roots which is called class conflict. in the other words, in thisarticle authors tried to indicate that one the creator or accelerating fact...