منابع مشابه
the investigation of research articles in applied linguistics: convergence and divergence in iranian elt context
چکیده ندارد.
the role of visual aids and translation in teaching vocabulary in est
the present study investigated the effect of the two vocabulary teaching techniques in est, namely the use of translation and the use of visual aids as two separate vocabulary teaching techniques. to answer the question of the study, a pretest (michigan test) was administered to the 58 randomly selected est students at khajeh nasiredin tusi university, faculty of mechanics. after the homogeneit...
15 صفحه اولStability Analysis of a Fractional Order Model of HIV virus and AIDS Infection in the Community
In this paper a non-linear model with fractional order is presented for analyzing and controlling the spread of HIV virus. Both the disease-free equilibrium and the endemic equilibrium are found and their stability is discussed. The basic reproduction number , which is a function of the constant parameters in the model, plays an essential role in the stability of the ...
متن کاملAIDS research in Brazil.
Brazil has earned international notoriety in thefight against AIDS. It is best known as the first developing country to provide free, universal access to antiretroviral treatment (ART) for all patients. In so doing, Brazil accomplished what many believed impossible: effectively delivering ART in a resource-limited setting while challenging the norms of the international pharmaceutical industry....
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ژورنال
عنوان ژورنال: Nature
سال: 1986
ISSN: 0028-0836,1476-4687
DOI: 10.1038/320563b0