there is insufficient rigorous research examining which features of efl/esl learners’ writing can be improved through their awareness/knowledge of collocation. this study, therefore, addressed this issue and examined the effect of this awareness on iranian efl learners’ writing performance with respect to the specific features of each writing sub-component (i.e., content, organization, vocabula...

in this paper, we study different methods of solving joint redundancy-availability optimization for series-parallel systems with multi-state components. we analyzed various effective factors on system availability in order to determine the optimum number and version of components in each sub-system and consider the effects of improving failure rates of each component in each sub-system and impr...

The construction of specifications is often a combination of smaller sub-components. Composition and decomposition are techniques that support reuse and allow us to formally combine sub-components through refinement steps while reusing their properties. Sub-components can result from a design or architectural goal and a refinement framework should allow further parallel development over the sub...

one of the soil and water management practices in order to delay drought stress under water deficit condition; is superabsorbent application. in order to study the effect of  superabsorbent application on yield and yield components, two antioxidant enzymes activity and water relation of two canola hybrids under terminal drought stress condition, a research was carried out in ahvaz climate condi...

Importance of well-dispersed copper species and well-developed ceria–zirconia surface during catalytic carbon dioxide hydrogenation to methanol.

The knowledge of Cr2O3 activity in slag is necessary to decarburize chromium-containing special steel while minimizing the oxidation loss chromium. In present study, firstly, phase relationship CaO–SiO2–Cr2O3 system was determined at 1573 K. Subsequently, activities two- and three-phase coexisting slags K were measured by equilibrating molten copper with oxide phases under a stream Ar + H2 CO2 ...