Hansen solubility parameters (HSP) of 15 commercially relevant biobased and biodegradable polyesters were experimentally determined by applying a novel approach to the classic solubility study method. In this approach, the extent of swelling in polymer films was determined using a simple equation based on the mass difference between swollen and nonswollen film samples to obtain normalized solvent uptake (). Using and HSPiP software, highly accurate HSP values were obtained for all 15 polyesters.
View Article and Find Full Text PDFBackground: Although community-level benefits of health system engagement (i.e., health service planning, delivery, and quality improvement, engaged research and evaluation, and collaborative advocacy) are well established, individual-level impacts on the health and well-being of community members are less explored, in particular for people who use or have used illegal drugs (PWUD).
View Article and Find Full Text PDFFatigue is both the most tremor-producing factor and the constant companion of a busy neurosurgeon. Because of the difficulty in controlling tremor-generating factors, the authors sought to develop a means of manipulating surgical instruments with minimal muscle movement while allowing accurate and repeatable movements in all conditions. The "quiet hand technique" is an isolation technique that creates a stable platform by forming the four fingers into a salute that thenceforth moves as one.
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