background chitosan is a naturally occurring biopolymer which has been widely used in a variety of biomedical applications including local antibiotic delivery due to its excellent mechanical properties, biodegradability and biocompatibility. beads are spherical, porous carriers which are prepared from various materials including chitosan. objectives the current study aimed to fabricate a new co...

Following Swales’s  (1981)  works  on  genre  analysis,  studies  on  different  sections  of  Research Articles  (RAs)  in  various  languages  and  fields  abound;  however,  only  scant  attention  has  been directed toward abstracts written in Persian, and in the field of literature. Moreover, claims made by Lores (2004) regarding the correspondence of two types of abstracts with different ...

Epistemic modality devices are believed to be one of the prominent characteristics of research articles as the commonly used genre among the academic community members. Considering the importance of such devices in producing and comprehending scientific discourse, this study aimed to cross–culturally and cross-linguistically investigate epistemic modality markers as an important subcategory...

high levels of rheumatoid factors (rf) are detectable in serum of the majority of patients with rheumatoid arthritis (ra), but 5-10% of patients remain seronegative (sn). despite clinical and genetic similarities between these two subsets of ra, it has been proposed that they may be regarded as distinct clinical entities. methods: in the present study a panel of monoclonal antibodies (mab) reco...

the incidence of candidemia due to the uncommon non-albicans candida species appears to be increasing, and certain species such as candida (c.) membranaefaciens have been reported in some clinical researches. vascular catheters are considered the likely culprit for the sudden emergence of hospital-acquired candidemia. the identification of c. membranaefaciens can be problematic in clinical prac...

an alumina supported co/ni catalyst was prepared by sol-gel procedure to study the catalytic behavior during fischer-tropsch synthesis in a fixed-bed reactor. the effect of co conversion (10-50%) on hydrocarbon product distribution (ch4, c5+ and c2-c4 olefin selectivities) was studied. selectivity for ch4 decreased, while those of c5+ and olefin selectivities increased with increasing co conver...

avo analysis is a technique which is widely used in industry and is applied on seismic prestack data. results from changes in seismic wave reflection amplitude versus offset can be used in extracting elastic properties and hence lithology and reservoirs pore fluid identification. before performing avo analysis studies, processing steps should be ensured that changes in reflection amplitude are ...

the natural ventilation is an easy way to exchange the indoor polluted warm air with outdoor fresh air. the wind power injects outdoor fresh air into the building. a good indoor air current and subsequently a proper exhaust depend on the openings’ conditions and their situations. a serious architectural question is under what conditions of the openings the wind-cross ventilation can be effectiv...

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