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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this paper showed the results of a qualitative investigation that looked into intracultural communication between brazilian teachers and students of english, and intercultural communication between american teachers and brazilian students of english. the aims were to identify and describe contextualization cues used by both brazilian and american speakers of english, and to connect these cues w...

this paper presents a low-cost compact planar microstrip-fed monopole antenna and its four-element array design for ultra-wideband (uwb) wireless communication and target detection applications, respectively, operating in the frequency span of 3 ghz to 11 ghz. a prototype was fabricated and then measured based on optimal parameters. the results of reflection coefficient (s11) and radiation patt...

data envelopment analysis (dea) is a method to evaluate the relative efficiency of decision making units (dmus). in this method, the issue has always been to determine a set of weights for each dmu which often caused many problems. since the dea models also have the multi-objective linear programming (molp) problems nature, a rational relationship can be established between molp and dea problem...