This paper examines methods for limiting occupational silica exposures for roof bolting personnel in underground coal mining. A canopy air curtain and an air tube were evaluated as means to provide filtered air over the breathing zone of these personnel. Laboratory testing showed that dust reductions beneath the air curtain and air tube approached 60 percent and 40 percent, respectively, with l...

Intranasal route, ensuring suitable bioavailability of medicines under circumvention of the gastrointestinal degradation and hepatic first-pass elimination, has been a popular choice for drug delivery. Among nasal dosage forms, mucoadhesive solid inserts have been shown to resist mucociliary clearance and provide a prolonged nasal residence time. Hence, the purpose of this study was the prepara...

Present study reports a computational investigation on heat transfer and pressure drop characteristics for flow through exchanger tube fitted with novel hybrid ribs by using magnetic nanofluid (Fe 3 O 4 ). Effects of different rib geometry have been investigated Reynolds number ranging from 000 to 22 000. Until now, there is little information available in the literature method quantifying effe...

2.Bailey, J.E., N.A. Da Silva, S.W. Peretti, J.H. Seo and F. Srienc. 1986. Studies of hostplasmid interactions in recombinant microorganisms. Ann. NY Acad. Sci. 469:194-211. 3.Lerner, C.G. and C.D. Carter. 1995. PCR colony screening using the scintillation proximity assay to detect inserts in cloning vectors. BioTechniques 19:914-917. 4.Liu, Z. and N.C. Mishra. 1995. Single-tube method for plas...

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