نتایج جستجو برای: o55
تعداد نتایج: 245 فیلتر نتایج به سال:
Abstract Introduction In recent years, new technologies and rising costs in the NHS have created a thirst for innovation, particularly surgical specialties. Centres medical education are being encouraged to cultivate enterprise innovative thinking among their students. A one-day educational conference was organised by student-led society introduce students technological advancements surgery und...
Entamoeba histolytica virulence is related to a number of amebic components (lectins, cysteine proteinases, and amebapore) and host factors, such as intestinal bacterial flora. Trophozoites are selective in their interactions with bacteria, and the parasite recognition of glycoconjugates plays an important role in amebic virulence. Long-term monoxenic cultivation of pathogenic E. histolytica tr...
Intrauterine inflammation is recognized as a key mediator of both normal and preterm birth but is also associated with neonatal neurological injury. Lipopolysaccharide (LPS) is often used to stimulate inflammatory pathways in animal models of infection/inflammation-induced preterm labor; however, inconsistencies in maternal and neonatal responses to LPS are frequently reported. We hypothesized ...
Abstract A pentasaccharide repeating unit corresponding to the cell wall O-antigen of Salmonella enterica O55 containing a rare sugar, 3-acetamido-3-deoxy-d-fucose has been synthesized as its p-methoxyphenyl glycoside using sequential stereoselective glycosylation strategy. suitably functionalized 3-azido-3-deoxy-d-fucose thioglycoside derivative was prepared in very good yield and used reactio...
Enteropathogenic Escherichia coli (EPEC) and enterohemorrhagic E. coli (EHEC) possess a filamentous type III secretion system (TTSS) employed to deliver effector proteins into host cells. EspA is a type III secreted protein which forms the filamentous extension to the TTSS and which interacts with host cells during early stages of attaching and effacing (A/E) lesion formation. By immunofluoresc...
The Eubank (2012, JDS) findings on taxation, political accountability and foreign aid has had an important influence in academic and policy-making debates. Eubank has warned that his findings should not be generalized across Africa until they are backed by robust empirical evidence. This paper puts some empirical structure to the celebrated literature. The empirical evidence which is based on d...
This study estimates liquidity premiums using the recently developed Liu (2006) measure within a multifactor capital asset pricing model (CAPM) including size premiums and a time varying parameter model for the West African emerging market of Nigeria. The evidence suggests that liquidity factors are relevant only for financial and basic materials sector stocks while size factor is more generall...
This paper examines how domestic, foreign, private and public investments affect incomeinequality through financial intermediary dynamics. With the exception of financial allocation efficiency, financial channels of depth and activity are good for the poor as they diminish estimated household income-inequality. Financial size does not have a significant incomeredistributive effect. Financial ef...
Using micro evidence from manufacturing and services firms located in 55 African countries, this paper shows that better management practice, reflected by international management certification, helps firms to raise productivity. Larger and older firms and firms operating closer to the technological frontier are more likely to possess international management standards certification, as do firm...
Post-Soviet African democratization has introduced elections into contexts that often lack restraints upon the behavior of candidates, resulting in the emergence of voter intimidation, vote-buying, and ballot fraud. We propose a model of electoral competition where, although some voters oppose violence, it is effective in intimidating swing voters. We show that in equilibrium a weak challenger ...
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