نتایج جستجو برای: cytopatic effect
تعداد نتایج: 1641630 فیلتر نتایج به سال:
measles has been a major cause of illness and death in children and vaccination against the disease is part of the who global immunization program. a suitable vaccine should create maximum immune response against the pathogen and must be safe for the user. thus, after production, vaccines must be analyzed and controlled by the producer and confirm by relevant governmental organizations. the foo...
OBJECTIVE Clostridium difficile is a gram-positive, anaerobic, spore-forming bacillus. Usually it does not cause disease unless a patient who is colonized with toxin-producing strains has been treated with antibiotics, particularly those that change the anaerobic flora of the large intestine. METHODS We investigated in a prospective study intestinal colonization of C. difficile and its toxins...
Measles has been a major cause of illness and death in children and vaccination against the disease is part of the WHO global immunization program. A suitable vaccine should create maximum immune response against the pathogen and must be safe for the user. Thus, after production, vaccines must be analyzed and controlled by the producer and confirm by relevant governmental organizations. The Foo...
Measles has been a major cause of illness and death in children and vaccination against the disease is part of the WHO global immunization program. A suitable vaccine should create maximum immune response against the pathogen and must be safe for the user. Thus, after production, vaccines must be analyzed and controlled by the producer and confirm by relevant governmental organizations. The Foo...
current studies in second language (l2) learning have revealed the positive role of corrective feedback (cf) in both oral and written forms in different language features. the present study was an attempt to investigate the effect of both direct and indirect written corrective feedback (wcf) on the use of grammatical collocations in l2 writing. the study also sought to examine whether the effec...
the aim of this study has been to find answers for the following questions: 1. what is the effect of immediate correction on students pronunciation errors? 2. what would be the effect of teaching the more rgular patterns of english pronunciation? 3. is there any significant difference between the two methods of dealing with pronuciation errore, i. e., correction and the teaching of the regular ...
flow in natural river bends is a complex and turbulent phenomenon which affects the scour and sedimentations and causes an irregular bed topography on the bed. for the reason, the flow hydralics and the parameters which affect the flow to be studied and understand. in this study the effect of bed and wall roughness using the software fluent discussed in a sharp 90-degree flume bend with 40.3cm ...
هدف این مطالعه تعیین کردن این مساله است که آیا فراگیران فارسی زبان قادر به تطبیق پارامتری ضمیر موصولی that در جملات ساده و پیچیده ی انگلیسی در سایه اصل دستور جهانی هستند یا خیر. به علاوه نقش جنسیت در رابطه با آزمون تشخیص درستی یا نادرستی جملات دستوری مورد بررسی قرار گرفت. داده ها از 54 دانشجوی فراگیر زبان انگلیسی در دانشگاه فردوسی مشهد گردآوری شد. شرکت کنندگان در آزمون شامل 28 زن (51.85 درصد)و ...
there is less published research about how teachers in efl contexts respond to students who are relatively less mature and less competent l2 writers. while writing researchers have examined various issues concerning peer and teacher response in writing-oriented classes, little research has centered on the effect of collaborative tasks particularly dictogloss on writing skills. output collaborat...
abstract: advertisements are the most accessible type of authentic materials, and this is one reason why they are used more and more in english teaching classes. for this cause, studies in the field of advertisements are very widespread nowadays. for pun is one aspect which makes advertisements more interesting, it is used more than before in advertisements. use of puns makes an advertisement m...
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