نتایج جستجو برای: specific symptoms

تعداد نتایج: 1285636  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شهید چمران اهواز - دانشکده ادبیات و علوم انسانی 1389

this study purported to compare and contrast the use of self-mention and evidentials as two mtadiscourse features in opinion columns of persian and english newspapers. the theoretical basis of this study is the idea that metadiscourse features vary across cultural boundaries. for this purpose, 150 persian and 150 english opinion columns were collected based on three factors of topic, audience a...

Journal: :Frontiers in Medicine 2021

Background: Since December 2019 the novel coronavirus (SARS-CoV-2) is center of global attention due to its rapid transmission and toll on health care systems economy. Population-based serosurveys measuring antibodies for SARS-CoV-2 provide one method estimating previous infection rates including symptom-free courses disease monitoring progression epidemic. Methods: In June 2020 we succeeded in...

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