نتایج جستجو برای: direct reduction
تعداد نتایج: 893873 فیلتر نتایج به سال:
Concentrated HIV epidemics have already occurred in IDUs in the neighbouring India, Myanmar and Nepal (WHO, Regional Office South-East Asia, 2008). Due to porous borders with India and Myanmar and central geographical situation between ‘Golden Triangle’(Myanmar, Thailand and Laos) and ‘Golden Crescent’ (Pakistan, Afghanistan and Iran), Bangladesh is a potential route of international drugs traf...
for the first time nakayama introduced qf-ring. in 1967 carl. faith and elbert a. walker showed that r is qf-ring if and only if each injective right r-module is projective if and only if each injective left r-modules is projective. in 1987 s.k.jain and s.r.lopez-permouth proved that every ring homomorphic images of r has the property that each cyclic s-module is essentialy embeddable in dire...
introduction: this in vitro study evaluated the influence of composite thickness (with or without fiber reinforcement) on fracture resistance of direct restorations in endodontically treated teeth. methods and materials: fifty-six intact human premolars were chosen and randomly divided into four groups ( n =14). after preparation of a mesio-occluso-distal (mod) cavities and cusp reduction, the ...
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