abstract in aggregate, active forms of reactive silica with mineral names are sometimes associated with sand and gravel in concrete mixture. alkali hydroxides originated from alkalis in the cement or other resources form an alkaline silica gel with this reactive silica which becomes swallowed and expanded during time causing damage to concrete. there have been growing researches on alkaline r...

One of the most important issues in anthropology is a moral issue that led to the development of the human personality and to provide excellence. Study on ethics, long of interest to researchers in various fields, especially in philosophy and mysticism. One of the areas of ethics applied ethics which deals with the analysis of the categories of excellence in human performance. Virtue ethics in ...

Iran’s armaments, dating back to ancient times, adore Iran and the world’s museums. The main focus of the research is study of Iran’s armaments in Islamic period by relying on the information of Islamic treasury in Iran National Museum. The major part of the information revolves around three main categories of military equipment, military organizations, and metalwork of Iran. The research quest...

the aim of the current study was to investigate the relationship among efl learners learning style preferences, use of language learning strategies, and autonomy. a total of 148 male and female learners, between the ages of 18 and 30, majoring in english literature and english translation at islamic azad university, central tehran were randomly selected. a package of three questionnaires was ad...

in the first part of this thesis we explored wetting and its dynamics for small droplets. first, we showed how a simple feature of water droplets on a surface, i.e. laplace pressure, can be exploited to build a micropump. we investigated capillary pumping in microchannels both experimentally and numerically. putting two droplets of different sizes at the in/outlet of a microchannel, will ge...

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Research Background and Objective: Dentistry, one of the branches of medicine, has always been of utmost significance to Islamic physicians, who addressed different aspects of dentistry and presented their viewpoints in medical texts. This study intended to investigate the significance of dentistry in Islamic medicine. Research Methods (Methodology): Employing a descriptive-analytical resear...

testing plays a vital role in any language teaching program. it allows teachers and stakeholders, including program administrators, parents, admissions officers and prospective employers to be assured that the learners are progressing according to an accepted standard (douglas, 2010). the problems currently facing language testers have both practical and theoretical implications but the first i...