Portable medical equipment (PME) can be an important reservoir of pathogens causing health care-associated infections. To address this, a novel, portable ultraviolet disinfection pod (UVDP) that allows for full 360-degree disinfection was developed. This investigation examined efficacy of the UVDP against microorganisms on clean, patient-ready PME.
View Article and Find Full Text PDFThe ideal free distribution assumes that animals select habitats that are beneficial to their fitness. When the needs of dependent offspring differ from those of the parent, ideal habitat selection patterns could vary with the presence or absence of offspring. We test whether habitat selection depends on reproductive state due to top-down or bottom-up influences on the fitness of woodland caribou (), a threatened, wide-ranging herbivore.
View Article and Find Full Text PDF1. Although local variation in territorial predator density is often correlated with habitat quality, the causal mechanism underlying this frequently observed association is poorly understood and could stem from facultative adjustment in either group size or territory size. 2.
View Article and Find Full Text PDFMovement patterns offer a rich source of information on animal behaviour and the ecological significance of landscape attributes. This is especially useful for species occupying remote landscapes where direct behavioural observations are limited. In this study, we fit a mechanistic model of animal cognition and movement to GPS positional data of woodland caribou (Rangifer tarandus caribou; Gmelin 1788) collected over a wide range of ecological conditions.
View Article and Find Full Text PDFThis is a summary of the theme, key new recommendations, and supporting science of the 2011 Canadian Hypertension Education Program (CHEP). In 2011, the ACCORD trial challenged current blood pressure treatment targets for people with diabetes. After consideration of multiple factors relating to the ACCORD trial design and its reporting, the current treatment target of <130/80 mm Hg was not changed.
View Article and Find Full Text PDFThe hypothesis was tested that upper limits to height growth in trees are the result of the increasing bending moment of trees as they grow in height. The increasing bending moment of tall trees demands increased radial growth at the expense of height growth to maintain mechanical stability. In this study, the bending moment of large lodgepole pine (Pinus contorta Dougl.
View Article and Find Full Text PDFThe literature dealing with the water conducting properties of sapwood xylem in trees is inconsistent in terminology, symbols and units. This has resulted from confusion in the use of either an analogy to Ohm's law or Darcy's law as the basis for nomenclature. Ohm's law describes movement of electricity through a conductor, whereas Darcy's law describes movement of a fluid (liquid or gas) through a porous medium.
View Article and Find Full Text PDFStem sapwood hydraulic permeability, tree leaf area, sapwood basal area, earlywood to latewood ratio of annual rings, radial variation in hydraulic permeability and stem hydraulic capacity were examined in dominant (D), codominant (CD) and suppressed (SP) lodgepole pine (Pinus contorta Dougl. ex Loud.) trees growing on medium and poor sites.
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