Photocatalytic degradation of gaseous pollutants on nanostructured TiO films of various thickness and surface area.

This work deals with the preparation of TiO nanoparticulate layers of various mass (0.05 mg/cm to 2 mg/cm) from three commercial nanopowder materials, P90, P25 and CG 300, their characterisation (profilometry, BET and SEM) and evaluation of their photocatalytic activity in the gaseous phase in a flow-through photoreactor according to the ISO standard (ISO 22197-2). Hexane was chosen as a single model pollutant and a mixture of four compounds, namely acetaldehyde, acetone, heptane and toluene was used for the evaluation of the efficiency of simultaneous removal of several pollutants.

Integrating design and ecological theory to achieve adaptive diverse pastures.

Increasing plant diversity is often suggested as a way of overcoming some of the challenges faced by managers of intensive pasture systems, but it is unclear how to design the most suitable plant mixtures. Using innovative design theory, we identify two conceptual shifts that foster potentially beneficial design approaches. Firstly, reframing the goal of mixture design to supporting ecological integrity, rather than delivering lists of desired outcomes, leads to flexible design approaches that support context-specific solutions that should operate within identifiable ecological limits.

Pediatric Health Care Provider Perspectives on Injury Prevention Counseling in Acute and Primary Care Settings.

The objective of this study was to characterize how pediatric primary care and emergency medicine health care providers and trainees engage in injury prevention counseling and assess perceptions toward injury prevention resources. We surveyed physicians, advanced practice providers, and trainees in the Emergency Department, Primary Care Network, and Pediatric Residency Program at Children's Hospital of Philadelphia from September to November 2019. Of the 578 eligible participants, 208 (36.