Some properties of nearly premixed laminar flame propagation along weakly stratified layers in combustible gas mixtures

Nearly premixed laminar flame propagation along weakly stratified layers in combustible gas mixtures is examined theoretically in the limit of weak flame stretch, high activation energy, and unity Lewis number. The stratification is represented by the variation in flame temperature along the reaction zone. Stratification is shown to affect the propagation velocity by a convective loss mechanism and by a diffusive mechanism that could be termed flame thickening. Whether a given amount of stratification should be expected to increase or decrease the propagation velocity compared with that of a nonstratified mixture depends on the angle the flame makes to the flow. The propagation velocity is most sensitive to the stratification for small flame angles.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/28735/1/0000562.pd

Stabilization zone structure in jet diffusion flames from liftoff toblowout

Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/77310/1/AIAA-1989-153-230.pd

Dynamic stabilization zone structure of jet diffusion flames from liftoff to blowout

Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/76733/1/AIAA-23512-341.pd

Early mobilization in the critical care unit: A review of adult and pediatric literature.

Early mobilization of critically ill patients is beneficial, suggesting that it should be incorporated into daily clinical practice. Early passive, active, and combined progressive mobilizations can be safely initiated in intensive care units (ICUs). Adult patients receiving early mobilization have fewer ventilator-dependent days, shorter ICU and hospital stays, and better functional outcomes. Pediatric ICU data are limited, but recent studies also suggest that early mobilization is achievable without increasing patient risk. In this review, we provide a current and comprehensive appraisal of ICU mobilization techniques in both adult and pediatric critically ill patients. Contraindications and perceived barriers to early mobilization, including cost and health care provider views, are identified. Methods of overcoming barriers to early mobilization and enhancing sustainability of mobilization programs are discussed. Optimization of patient outcomes will require further studies on mobilization timing and intensity, particularly within specific ICU populations

Power generation calculations reference guide : Tyler G. Hicks, McGraw-Hill, NY, 1987, x + 366 pp., $36.50

Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/27282/1/0000298.pd