A field investigation has been undertaken to characterize the event‐based bed load transport dynamics of a highly urbanized gravel bed stream. A combination of direct bed load and tracer particle measurements were taken over a 3 year period during which time approximately 30 sediment mobilizing events occurred. Sediment transport measurements were used to calibrate a fractional bed load transport model and combined with hydrometric data which represent four different land use conditions (ranging from rural to highly urbanized) to analyze the differences in discharge magnitude and frequency and its impact on sediment transport. Fractional transport analysis of the bed load measurements indicates that frequent intermediate discharge events can mobilize sand and fine gravel to an approximate equally mobile condition, however, the transport rates at these discharges exhibit greater variability than at discharges above the bankfull discharge. Path lengths of the coarse fraction, measured using tracer clasts, are insensitive to peak discharge, and instead transport at distances less than those reported in other gravel bed channels, which is attributed to the shorter duration discharge events common to urban streams. The magnitude‐frequency analysis reveals that the frequency, time, and volume of competent sediment mobilizing events are increasing with urbanization. Variability in effective discharges suggests that a range of discharges, spanning between frequent, low magnitude events to less frequent, high magnitude events are geomorphically significant. However, trends in the different land use scenarios suggest that urbanization is shifting the geomorphic significance toward more frequent, lower magnitude events.

A common approach used to mitigate riverbank erosion and maintain watercourse alignments has been through the application of riprap or larger, more stable particles, to channel boundaries along reaches of interest. Very often, however, these large particles become dislodged from their 1

No abstract

Reliable provision of emergency equipment in Critical Care is key to ensure patient safety during medical emergencies and transfers. A problem was identified in incident reports and external inspections of processes that ensured the provision of such equipment for use by critical care teams in non-critical care areas in the form of grab bags. A comprehensive project was undertaken to tackle this including the provision of a bespoke digital system.Existing systems were reliant on staff remembering to check equipment and document checks on paper and there was no formal ability to hand over ongoing problems. A local project management approach, ‘7 Steps to Quality Improvement’, which integrated many of the philosophies and tools from Healthcare Improvement was used. A bespoke digital system was designed and implemented with integrated improvements in equipment stocking ergonomics.The reliability of documented equipment checks improved significantly, there was a significant reduction in the number of incident reports regarding emergency equipment and the time spent by staff doing equipment checks was reduced substantially with significant cost and resource improvements. This was so successful the format has been rapidly translated and spread to other areas such as operating theatres’ difficult airway trolleys.Undertaking a structured quality improvement approach, using appropriate stakeholder engagement, digitalisation of systems and improvements in basic system ergonomics can have a substantial impact on the reliability and safety of emergency equipment provided for use by members of the critical care team.

No abstract