this thesis attempts to investigate the effects of prelistening activities on enhancing iranian efl learners` listening comprehension. the present study investigated ways in which learners` background knowledge could be activated in order to enhance their l2 listening comprehension by limiting the number of possible text interpretations prior to listening. the experiments conducted in this stud...

Military medicine research is vital for protection against weapons of mass destructions' specially threat of chemical and biological warfare and bioterrorism. Great advances in the life sciences, like biotechnology, genetic engineering and molecular biology have created a pressing need  for steps that must be taken to reduce this threat to humanity. The biosafety regulations and code of...