a research program was conducted on different clay-bearing rocks selected from the ilam, sarpol-e zahab and tajarak regions (iran) to predict their slaking characteristics. the new durability apparatus (nested mesh drums) separates disintegrated particles varying from > 25.4 to < 2 mm as the drums were rotated. on the basis of the particle size distribution, the disintegration ratio (dr) was us...

this research aims to introduce culture and thought -within whorfian hypothesis-of the target language to efl learners and helps them get a deeper idea over the root and reference of words and thereby keep them longer in memory. to test the hypothesis orwell’s animal farm was chosen along with two translations in persian as well as a persian short story titled ahu-ye kuhi . required data were e...

in this research, biostratigraphy and paleo-ecological reconstruction of the qom formation deposits in bijegan village, northeast ofdelijan, are discussed. the studied section is situated in the western margin of the urumieh-dokhtar magmatic arc (the intra-arc basin).the qom formation deposits at the studied area are rupelian-chattian in age. larger benthic foraminifers are used for biostratigr...

in endodontics, treatment of an open apex tooth with necrotic pulp is a problem. it seems that with promotion of remnants of hertwig’s epithelial sheath or rest of malassez accompany with a good irrigation of root canal we can expect root formation.

one section of the tarbur formation (462 m thickness) located about 5 km southwest of semirom was studied. it consists of carbonate and terrigenous rocks and contains abundant large benthic foraminifera assigned to the late maastrichtian. in the upper maastrichtian, loftusia is very abundant in carbonate sequence of the middle east tethyan realm. loftusia is an important genus for palaeontologi...

gas hydrates are a costly problem when they plug oil and gas pipelines. the best way to determine the hft and pressure is to measure these conditions experimentally for every gas system. since this is not practical in terms of time and money, correlations are the other alternative tools. there are a small number of correlations for specific gravity method to predict the hydrate formation. as th...

â â â â  reza roshan [1] â  department of economics, university of sistan and baluchestan , iran â  mosayeb pahlavani â  department of economics, university of sistan and baluchestan, iran â  mohammad nabi shahyaki tash â  department of economics, university of sistan and baluchestan, iran â  â â â  abstract â  consumption is the principal feature of iran’s gross national production. therefor...

in this paper, the important formation control problem of nonholonomic wheeled mobile robots is investigated via a leader-follower strategy. to this end, the dynamics model of the considered wheeled mobile robot is derived using lagrange equations of motion. then, using adams multi-body simulation software, the obtained dynamics of the wheeled system in matlab software is verified. after that, ...

in this paper, a stochastic cell formation problem is studied using queuing theory framework and considering reliability. since cell formation problem is np-hard, two algorithms based on genetic and modified particle swarm optimization (mpso) algorithms are developed to solve the problem. for generating initial solutions in these algorithms, a new heuristic method is developed, which always cre...

this paper proposes an extension of markov chain model to characterize of geological formations and to make conditioning on any number of well data possible. in this study, lithofacies cycles of the amiran formation at type and pirshamsedin sections are examined by markov method and entropy analysis as well as field observations, and depositional environment has interpreted by proposed ideal se...