the present study attempted to discover the impact of reduction recasts on the improvement of the speaking ability and on the repaired grammatical uptake rates of iranian intermediate level efl learners. after administering a language proficiency test, 52 homogeneous students were randomly assigned to the experimental and control group. the comparison of the two groups on the speaking pretest c...

Chrysophyceae, also known as golden algae, contain characteristic, three-dimensional biomineralized silica structures. Their chemical composition and microscopic structure was studied. By high-temperature conversion of the skeleton of Mallomonas caudata and Synura petersenii into elementary silicon by magnesium vapour, nanostructured defined replicates were produced which were clearly seen afte...

the main problem of solid waste management system in tehran is to handle a large amount of waste (7.641 ton/day in 2008). therefore, source reduction can be introduced as one of the first priority for solid waste management in tehran. this research represents the first attempt to quantify the source reduction potential in the city, and subsequently, outlines the principle guidelines, legislatio...

effect of water gas shift reaction (co+h2o=co2+h2) on wustite reduction has been investigated by a transient, non-isothermal mathematical model based on grain model. in this model, wustite porous pellet is reduced using syngas, namely a mixture of hydrogen, carbon monoxide, carbon dioxide and water vapor. for this purpose, governing equations containing continuity equation of species and energy...

conclusions it can be concluded that electronic health records lead to a reduction in medication errors and increase patient safety. background medication errors are the most common medical errors, and are one of the major challenges threatening the healthcare system, which is inherently susceptible to error. objectives in this study, we aimed to compare the occurrence of errors between two met...

The application of synthetic colors in textile industries and their entry into the water and groundwater is an environmental problem because of being very toxic material. The synthetic colors which are used in textile dyeing (plyacrilic and polyester) are usually dispersing colorants. They derive the azo and anthraquinone chemicals. Electro-Fenton process is an efficient technique which can deg...

background: the aim of this study was to evaluate whether an eight-week group mindfulness-based stress reduction program would be an acceptable and effective treatment for patients suffering from gad. methods: eligible subjects with generalized anxiety disorder were recruited to parsa hospital and shahid rajaee counseling and social work center from june 2009 to october 2011. an experienced psy...