Proton transfer and regulation across chemical interfaces by small-molecule assemblies.

We report on measurements and control of proton gradient across interfaces of water and dichloroethane. Such interfaces are interesting as mimics of biological membranes. We use impedance spectroscopy to quantify interfacial proton gradient and identify proton transfer modes.

Update on pressure ulcer management and deep tissue injury.

Objective: To review recent literature regarding therapeutic management of pressure ulcers and to discuss the potential implications of the newly recognized entity, deep tissue injury (DTI).

Data Sources: A MEDLINE search was conducted of pressure ulcer therapy published between January 2001 and October 2009. Key search terms included pressure ulcers, deep tissue injury, nutrition, antibiotics, and therapy.